CN109859581A - A kind of high school physics uniform variable motion experiment comparison apparatus - Google Patents
A kind of high school physics uniform variable motion experiment comparison apparatus Download PDFInfo
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- CN109859581A CN109859581A CN201910264377.0A CN201910264377A CN109859581A CN 109859581 A CN109859581 A CN 109859581A CN 201910264377 A CN201910264377 A CN 201910264377A CN 109859581 A CN109859581 A CN 109859581A
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Abstract
The invention discloses a kind of high school physics uniform variable motion to test with comparison apparatus, belong to physics experiments of high school apparatus field, a kind of high school physics uniform variable motion experiment comparison apparatus, bottom plate is tested including even speed change, even speed change experiment bottom plate upper end, which is dug, sets board slot, it sets and is equipped with datum plane plate in board slot, material plate is equipped on the left of datum plane plate to press from both sides, material plate folder left end is bonded with datum plane plate left end, even speed change experiment bottom plate upper end, which is dug, rotary axis groove, rotary axis groove is located on the right side of datum plane plate, inclined plate shaft is equipped in rotary axis groove, initial velocity inclined plate is rotatably connected in inclined plate shaft, it may be implemented in doing uniform variable motion experimentation, reduce interference of the acceleration of gravity sliding block to experimental factors, make sliding block mobile relative to the direction for being parallel to motion profile simultaneously, reduce bottom plate caused by oblique movement to rub The objective factor for wiping power experiment influences.
Description
Technical field
The present invention relates to physics experiments of high school apparatus fields, more specifically to a kind of high school physics uniform variable motion
Experiment comparison apparatus.
Background technique
High school physics will deepen the understanding to important physical knowledge, some will be entered quantitative calculating, such as power by qualitative discussion
With relationship, kinetic energy concept, electromagnetic induction, the nuclear energy of movement etc., in high school physics study, experimental problem is the basis of physics, high
The examination that physics also extremely focuses on experiment is examined, during object of which movement, the variable quantity of speed and is occurred used in this variation
The ratio of time is known as acceleration (being indicated with a).If an object moves along a straight line, and acceleration is kept not in the process of movement
Become, then this object is claimed to do uniformly accelrated rectilinear motion.Its acceleration is some definite value, just when this definite value perseverance is zero
Become linear uniform motion or static.It may be said that linear uniform motion is the special circumstances of uniformly accelrated rectilinear motion.But in
It learns in examination, generally not linear uniform motion as uniformly accelrated rectilinear motion.
The study of high school physics force analysis is mostly experimental teaching, and student is enabled intuitively to watch experiment method, is rubbed
The apparatus for demonstrating for wiping power is mostly conveyor type friction force demonstration device, and conveyer belt rotation is measured on conveyer belt by dynamometer
Frictional force suffered by sliding block, state when this kind of device is for sliding block static friction are shown and in terms of the measurement of differentiated friction power
Performance is insufficient, for this purpose, we have proposed a kind of high school physics friction force demonstration device, Chinese invention Publication No.
CN108694878A discloses " a kind of high school physics friction force demonstration device " of instructional device technical field, including station,
The bottom four corners of the station have been connected by screw to footing, and installation seat plate is equipped at the top of the station, described
Friction plate is installed at the top of installation seat plate, sliding block is provided at the top of the friction plate, is connected at the top of the right side wall of the sliding block
It is connected to top plate, is connected with proving ring in the middle part of the right side wall of the sliding block, which is with sliding block
State mode is demonstrated, and convenient for being shown from static to movement to sliding block, by the mutual cooperation of embedded block and caulking groove, is avoided
Friction plate transverse shifting can carry out friction testing displaying to different materials, by pressing by the replaceable design of friction plate
The mutual cooperation of pusher-type switch and top plate can avoid causing to damage to motor timely by the circuitry cuts where motor
It is bad.
Above-mentioned technical proposal can be demonstrated during high school physics friction force demonstration by dynamical fashion of sliding block,
By the replaceable design of friction plate, friction testing demonstration is carried out to different materials, wherein the different materials bottom of sliding block lower end
Unique variable when plate is as sliding block sliding, but in actual use, due to that can not be examined to the tilt angle of bottom plate
It surveys, therefore gravity makes sliding block generate acceleration change in the experimental stage of different materials, becomes the disturbing factor of experimental result, also
There is sliding block experimental stage motion track may be under by gravity, the oblique placement of bottom plate causes to generate between sliding block and floor oblique
To movement, to generate interference to experimental result.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, it is real that the purpose of the present invention is to provide a kind of high school physics uniform variable motion
It tests with apparatus is compared, it may be implemented in doing uniform variable motion experimentation, reduce the acceleration pair of gravity sliding block
The interference of experimental factors, while making sliding block relative to the direction movement for being parallel to motion profile, reduce oblique movement and causes
Bottom plate frictional force experiment objective factor influence.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of high school physics uniform variable motion experiment comparison apparatus, including even speed change test bottom plate, and the even speed change is real
It tests the cutting of bottom plate upper end and sets board slot, described set is equipped with datum plane plate, is equipped with material on the left of the datum plane plate in board slot
Plate folder, material plate folder left end are bonded with datum plane plate left end, and the even speed change experiment bottom plate upper end, which is dug, rotary axis groove,
The rotary axis groove is located on the right side of datum plane plate, and inclined plate shaft is equipped in the rotary axis groove, is rotatablely connected in the inclined plate shaft
There is initial velocity inclined plate, the initial velocity inclined plate is fixedly connected with middle shaft far from inclined plate shaft one end, and the middle shaft right end turns
Dynamic to be connected with the fast surface plate of note, the initial velocity inclined plate is fixedly connected with pinch plane shaft close to middle shaft one end, and the pinch plane turns
Axis lower end is rotatably connected to inclined plate telescopic rod, and the note fast surface plate lower end is fixedly connected with plane telescopic rod, the initial velocity
Inclined plate is equipped with test carriage, and the test carriage right end is fixedly connected with the fast line of note, and the fast surface plate upper end of the note is fixed to be connected
It is connected to weighing apparatus power outer tube, the weighing apparatus power outer tube centre, which is dug, threading hole, and the fast line right end of the note is through the fixed company of threading hole
It is connected to copper core displacement inner sleeve, the copper core displacement inner sleeve right end, which is fixedly connected with, gets paper tape ready, and the copper core shifts inner sleeve
Dotted timer is equipped on the right side of pipe, the dotted timer is fixedly connected with fast surface plate is remembered, described to get paper tape ready and get meter ready
When device match, may be implemented in doing uniform variable motion experimentation, reduce gravity sliding block acceleration to experiment
The interference of influence factor, while making sliding block relative to the direction movement for being parallel to motion profile, reduce bottom caused by oblique movement
The objective factor of plate frictional force experiment influences.
Further, digging among the weighing apparatus power outer tube has rectangular track groove, and magnetic pole is equipped in the rectangular track groove
Slide bar, magnetic pole slide bar left end are fixedly connected with rectangular track groove inner wall, the copper core displacement inner sleeve and magnetic pole jack rod sleeve
It connects, by the magnetic pole slide bar set in weighing apparatus power outer tube, convenient for keeping copper core displacement inner sleeve steady along straight line on magnetic pole slide bar
Sliding, reduction shift the situation for test carriage diagonal movement on initial velocity inclined plate that inner sleeve is connect by the fast line of note with copper core
Occur.
Further, the copper core displacement inner sleeve is equipped with circular magnetic loop slot, the circular magnetic loop slot around magnetic pole slide bar
Interior to be equipped with lasso magnet ring, the lasso magnet ring is fixedly connected with circular magnetic loop slot inner wall, magnetic pole slide bar upper end magnetic pole and set
Circle magnet ring upper end magnetic pole is identical, by shifting the lasso magnet ring added in inner sleeve in copper core, exists convenient for copper core displacement inner sleeve
Suspension is affected by magnetic forces on magnetic pole slide bar, thus reduce copper core displacement inner sleeve in sliding process with the friction shadow of magnetic pole slide bar
It rings.
Further, the copper core displacement inner sleeve inside pipe wall is equipped with magnetcisuspension liquid layer, and magnetcisuspension liquid layer outer end and copper core are moved
Position inner sleeve inside pipe wall is fixedly connected, and magnetcisuspension liquid layer inner end is fitted closely with magnetic pole slide bar, by shifting inner sleeve in copper core
The magnetcisuspension liquid layer inside added, convenient for filling when copper core displacement inner sleeve and magnetic pole slide bar inner wall, which are disturbed factor, influences mobile
It shifts in copper core and is lubricated between inner sleeve and magnetic pole slide bar, while lasso magnetic of the magnetcisuspension liquid layer in copper core displacement inner sleeve
Under ring magnetization, make copper core displacement inner sleeve and magnetic pole slide bar relative separation, reduces magnetic pole slide bar and rub to copper core displacement inner sleeve
Wipe drag effects.
Further, quarter block is equipped on the upside of the middle shaft, the quarter block lower end is fixed with fast surface plate is remembered
Connection, the quarter block upper end are slidably connected with fast line is remembered, by the quarter block added in middle shaft, convenient for reducing note
Fast line reduces when remembering fast line movement in the friction of initial velocity inclined plate and note fast surface plate junction to test carriage movement speed
It influences.
Further, the magnetcisuspension liquid layer main component is magnetic grease, include in the magnetic grease base load liquid,
Magnetic particle and surfactant.
Further, the inclined plate telescopic rod and plane telescopic rod right end, which are dug, threaded hole, sets in the threaded hole
There is positioning clamping pin, the positioning clamping pin is connect with threaded hole inner thread, passes through the spiral shell on inclined plate telescopic rod and plane telescopic rod
The positioning clamping pin of line connection, is fixed, and then to first convenient for the position to inclined plate telescopic rod and plane telescopic rod after adjusting
The height of the fast surface plate of tilt angle and note of speed inclined plate is fixed.
Further, the type that the dotted timer is selected is electric spark clock.
Further, digging in the weighing apparatus power outer tube has bung flange wire casing, and solenoid is equipped in the bung flange wire casing,
The weighing apparatus power outer tube rear end is equipped with battery, and the solenoid both ends and battery are electrically connected, by with electromagnetism
Solenoid be electrically connected battery, convenient in initial velocity inclined plate tilt angle it is big, when the initial velocity of test carriage is larger, make electricity
Magnetic spiral circle is powered, limitation of the enhancing solenoid to the acceleration of copper core displacement inner sleeve on magnetic pole slide bar, and then reduces
Influence of the external factor to object uniform variable motion.
Further, the magnetic particle main component is iron oxide magnetic solid particle, the iron oxide magnetic solid
Particle is prepared by chemical coprecipitation.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) this programme may be implemented in doing uniform variable motion experimentation, reduce the acceleration of gravity sliding block
Interference to experimental factors, while making sliding block relative to the direction movement for being parallel to motion profile, reduce oblique movement and makes
At bottom plate frictional force experiment objective factor influence.
(2) digging among weighing apparatus power outer tube has rectangular track groove, and magnetic pole slide bar is equipped in rectangular track groove, and magnetic pole slide bar is left
End is fixedly connected with rectangular track groove inner wall, and copper core displacement inner sleeve connects with magnetic pole jack rod sleeve, by setting in weighing apparatus power outer tube
Magnetic pole slide bar, convenient for reducing copper core displacement inner sleeve along straight line smooth sliding, by remembering fast line and copper on magnetic pole slide bar
Core shifts test carriage mobile situation generation of diagonal on initial velocity inclined plate of inner sleeve connection.
(3) copper core displacement inner sleeve is equipped with circular magnetic loop slot around magnetic pole slide bar, is equipped with lasso magnet ring in circular magnetic loop slot,
Lasso magnet ring is fixedly connected with circular magnetic loop slot inner wall, and magnetic pole slide bar upper end magnetic pole is identical as lasso magnet ring upper end magnetic pole, is passed through
The lasso magnet ring added in copper core displacement inner sleeve is affected by magnetic forces on magnetic pole slide bar outstanding convenient for copper core displacement inner sleeve
It is floating, to reduce frictional influence of the copper core displacement inner sleeve in sliding process with magnetic pole slide bar.
(4) copper core displacement inner sleeve inside pipe wall is equipped with magnetcisuspension liquid layer, and magnetcisuspension liquid layer outer end and copper core displacement inner sleeve inside pipe wall are solid
Fixed connection, magnetcisuspension liquid layer inner end are fitted closely with magnetic pole slide bar, by shifting the magnetcisuspension liquid layer added in inner sleeve in copper core, just
In when copper core displacement inner sleeve and magnetic pole slide bar inner wall, which are disturbed factor, influences mobile, it is filled in copper core displacement inner sleeve and magnetic
It is lubricated between the slide bar of pole, while magnetcisuspension liquid layer shifts copper core under the lasso magnet ring magnetization in copper core displacement inner sleeve
Inner sleeve and magnetic pole slide bar relative separation, reducing magnetic pole slide bar influences the frictional resistance of copper core displacement inner sleeve.
(5) quarter block is equipped on the upside of shaft, quarter block lower end is fixedly connected with fast surface plate is remembered, on quarter block
End is slidably connected with fast line is remembered, by the quarter block added in middle shaft, convenient for reduce remember fast line initial velocity inclined plate with
Remember the friction of fast surface plate junction, reduces the influence remembered when fast line is mobile to test carriage movement speed
(6) inclined plate telescopic rod and plane telescopic rod right end, which are dug, threaded hole, and positioning clamping pin, positioning are equipped in threaded hole
Bayonet lock is connect with threaded hole inner thread, by the positioning clamping pin being threadedly coupled on inclined plate telescopic rod and plane telescopic rod, just
Be fixed in the position to inclined plate telescopic rod and plane telescopic rod after adjusting, so to the tilt angle of initial velocity inclined plate and
Remember that the height of fast surface plate is fixed.
(7) digging in weighing apparatus power outer tube has bung flange wire casing, and solenoid is equipped in bung flange wire casing, power outer tube rear end of weighing
Equipped with battery, solenoid both ends and battery are electrically connected, by the battery being electrically connected with solenoid,
Convenient for big in initial velocity inclined plate tilt angle, when the initial velocity of test carriage is larger, solenoid is made to be powered, enhances electromagnetism spiral shell
Limitation of the coil to the acceleration of copper core displacement inner sleeve on magnetic pole slide bar, and then reduce external factor to object uniform variable motion
Influence.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is the preparation stage of the invention；
Fig. 2 is the structural schematic diagram in Fig. 1 at A；
Structural schematic diagram when Fig. 3 is the experimental stage of the invention；
Fig. 4 is the structural schematic diagram that the present invention at the uniform velocity shifts inner sleeve；
Fig. 5 is the view in transverse section of present invention weighing apparatus power outer sleeve portion；
Fig. 6 is the longitdinal cross-section diagram of present invention weighing apparatus power outer sleeve portion.
Figure label explanation:
1 even speed change experiment bottom plate, 2 datum plane plates, 3 material plates folder, 4 inclined plate shafts, 5 initial velocity inclined plates, shaft, 7 in 6
Remember fast surface plate, 8 inclined plate telescopic rods, 9 pinch plane shafts, 10 plane telescopic rods, 11 weighing apparatus power outer tubes, 12 test carriages, 13 note speed
Line, 14 quarter blocks, 15 magnetic pole slide bars, 16 copper cores displacement inner sleeve, 17 get ready paper tape, 18 dotted timers, 19 positioning clamping pins,
20 lasso magnet rings, 21 magnetcisuspension liquid layers, 22 solenoids, 23 threading holes.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description；Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments, is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "inner", "outside", " top/bottom end "
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand
For indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Be equipped with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to removable
Connection is unloaded, or is integrally connected, can be mechanical connection, is also possible to be electrically connected, can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements, for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1:
Fig. 1-6, a kind of high school physics uniform variable motion experiment comparison apparatus, including even speed change experiment bottom plate 1 are please referred to,
Even speed change experiment 1 upper end of bottom plate, which is dug, sets board slot, sets and is equipped with datum plane plate 2 in board slot, is equipped with material on the left of datum plane plate 2
Scutum folder 3, material plate presss from both sides 3 left ends and is bonded with 2 left end of datum plane plate, and even speed change experiment 1 upper end of bottom plate, which is dug, rotary axis groove, turns
Axial trough is located at 2 right side of datum plane plate, is equipped with inclined plate shaft 4 in rotary axis groove, is rotatably connected to initial velocity inclined plate in inclined plate shaft 4
5, initial velocity inclined plate 5 is fixedly connected with middle shaft 6 far from 4 one end of inclined plate shaft, and middle 6 right end of shaft is rotatably connected to the fast plane of note
Plate 7, initial velocity inclined plate 5 are fixedly connected with pinch plane shaft 9 close to middle 6 one end of shaft, and 9 lower end of pinch plane shaft is rotatably connected to inclined plate
Telescopic rod 8 remembers that 7 lower end of fast surface plate is fixedly connected with plane telescopic rod 10, and initial velocity inclined plate 5 is equipped with test carriage 12, real
It tests 12 right end of trolley and is fixedly connected with the fast line 13 of note, remember that 7 upper end of fast surface plate is fixedly connected with weighing apparatus power outer tube 11, weigh power housing
Digging among pipe 11 has threading hole 23, remembers that fast 13 right end of line is fixedly connected with copper core displacement inner sleeve 16, copper through threading hole 23
Core displacement 16 right end of inner sleeve, which is fixedly connected with, gets paper tape 17 ready, and copper core, which shifts, is equipped with dotted timer 18 on the right side of inner sleeve 16,
Dotted timer 18 is fixedly connected with fast surface plate 7 is remembered, is got paper tape 17 ready and is matched with dotted timer 18, dotted timer 18
The type of selection is electric spark clock, be may be implemented in doing uniform variable motion experimentation, is reduced under gravity
Interference of the acceleration of sliding block to experimental factors, while making sliding block relative to the direction movement for being parallel to motion profile, subtract
The objective factor of the experiment of bottom plate frictional force caused by small oblique movement influences.
Referring to Fig. 1, digging among weighing apparatus power outer tube 11 has rectangular track groove, magnetic pole slide bar is equipped in rectangular track groove
15,15 left end of magnetic pole slide bar is fixedly connected with rectangular track groove inner wall, and copper core shifts inner sleeve 16 and magnetic pole slide bar 15 is socketed, and is led to
The magnetic pole slide bar 15 set in weighing apparatus power outer tube 11 is crossed, convenient for keeping copper core displacement inner sleeve 16 flat along straight line on magnetic pole slide bar 15
Stable sliding moves, and reduces the test carriage 12 connecting by the fast line 13 of note with copper core displacement inner sleeve 16 diagonal on initial velocity inclined plate 5
Mobile situation occurs.
Referring to Fig. 1, copper core displacement inner sleeve 16 is equipped with circular magnetic loop slot around magnetic pole slide bar 15, set in circular magnetic loop slot
There is lasso magnet ring 20, lasso magnet ring 20 is fixedly connected with circular magnetic loop slot inner wall, 15 upper end magnetic pole of magnetic pole slide bar and lasso magnet ring
20 upper end magnetic poles are identical, by shifting the lasso magnet ring 20 added in inner sleeve 16 in copper core, shift inner sleeve 16 convenient for copper core
Suspension is affected by magnetic forces on magnetic pole slide bar 15, thus reduce copper core displacement inner sleeve 16 in sliding process with magnetic pole slide bar 15
Frictional influence.
Referring to Fig. 4, copper core displacement 16 inner wall of inner sleeve is equipped with magnetcisuspension liquid layer 21,21 outer end of magnetcisuspension liquid layer and copper core are shifted
16 inner wall of inner sleeve is fixedly connected, and 21 inner end of magnetcisuspension liquid layer is fitted closely with magnetic pole slide bar 15, by shifting inner sleeve in copper core
The magnetcisuspension liquid layer 21 added in 16 influences to move convenient for being disturbed factor in copper core displacement inner sleeve 16 and 15 inner wall of magnetic pole slide bar
When, it is filled between copper core displacement inner sleeve 16 and magnetic pole slide bar 15 and is lubricated, while magnetcisuspension liquid layer 21 is in copper core displacement
Under lasso magnet ring 20 in casing 16 magnetizes, makes copper core displacement inner sleeve 16 and 15 relative separation of magnetic pole slide bar, reduce magnetic-pole sliding
Bar 15 influences the frictional resistance of copper core displacement inner sleeve 16.
Referring to Fig. 3, being equipped with quarter block 14 on the upside of middle shaft 6,14 lower end of quarter block and the fast surface plate 7 of note are fixed and are connected
It connects, 14 upper end of quarter block is slidably connected with fast line 13 is remembered, by the quarter block 14 added in middle shaft 6, convenient for reducing
Remember that fast line 13 in the friction of 7 junction of initial velocity inclined plate 5 and the fast surface plate of note, reduces when remembering the fast movement of line 13 to test carriage 12
The influence of movement speed.
Referring to Fig. 4,21 main component of magnetcisuspension liquid layer is magnetic grease, it include base load liquid, magnetism in magnetic grease
Particle and surfactant, magnetic particle main component are iron oxide magnetic solid particle, and iron oxide magnetic solid particle passes through
Chemical coprecipitation preparation.
Referring to Fig. 2, inclined plate telescopic rod 8 and 10 right end of plane telescopic rod, which are dug, threaded hole, it is fixed to be equipped in threaded hole
Position bayonet lock 19, positioning clamping pin 19 are connect with threaded hole inner thread, pass through the screw thread on inclined plate telescopic rod 8 and plane telescopic rod 10
The positioning clamping pin 19 of connection is fixed convenient for the position to inclined plate telescopic rod 8 and plane telescopic rod 10 after adjusting, and then right
The height of the fast surface plate 7 of tilt angle and note of initial velocity inclined plate 5 is fixed.
Referring to Fig. 5, digging in weighing apparatus power outer tube 11 has bung flange wire casing, solenoid 22, weighing apparatus are equipped in bung flange wire casing
11 rear end of power outer tube is equipped with battery, and 22 both ends of solenoid and battery are electrically connected, by with solenoid
22 be electrically connected batteries, convenient in 5 tilt angle of initial velocity inclined plate it is big, when the initial velocity of test carriage 12 is larger, make electricity
Magnetic spiral circle 22 is powered, limitation of the enhancing solenoid 22 to the acceleration of copper core displacement inner sleeve 16 on magnetic pole slide bar 15,
And then reduce influence of the external factor to object uniform variable motion.
Before experiment carries out, even speed change experiment bottom plate 1 is adjusted by counselor first, it is made to be in water as far as possible
Level state, the fixation of datum plane plate 2 are benchmark plate, i.e. the smallest plate of material of frictional resistance, it is necessary first to which determination is being arranged
Out when other distracters, which has to the influence factor of object uniform variable motion, test carriage 12 is first certainly in heeling condition
When moving on speed inclined plate 5, there is certain initial velocity, in this course, since what is used on datum plane plate 2 rubs
The smallest plate of material of power is wiped, test carriage 12 carries out speed influence to it, only during mobile on datum plane plate 2
The acceleration of gravity and test carriage 12 itself movement that datum plane plate 2 caused by even speed change experiment 1 tilt angle of bottom plate is subject to
The friction that track generates when being oblique, therefore delaying to acceleration for inner sleeve 16 is shifted by magnetic pole slide bar 15 and copper core
Punching, while smooth sliding, the motion track of correction test carriage 12 subtract on copper core displacement inner sleeve 16 using magnetic pole slide bar 15
The influence that this few two parts test even speed change.
Embodiment 2:
A kind of high school physics uniform variable motion experiment comparison apparatus, including even speed change test bottom plate 1, and even speed change tests bottom
1 upper end of plate is dug and sets board slot, sets and is equipped with datum plane plate 2 in board slot, and material plate folder 3, material are equipped on the left of datum plane plate 2
Plate presss from both sides 3 left ends and is bonded with 2 left end of datum plane plate, and even speed change experiment 1 upper end of bottom plate, which is dug, rotary axis groove, and rotary axis groove is located at benchmark
2 right side of surface plate, rotary axis groove is interior to be equipped with inclined plate shaft 4, is rotatably connected to initial velocity inclined plate 5, initial velocity inclined plate in inclined plate shaft 4
5 are fixedly connected with middle shaft 6 far from 4 one end of inclined plate shaft, and middle 6 right end of shaft is rotatably connected to the fast surface plate 7 of note, and initial velocity is oblique
Plate 5 is fixedly connected with pinch plane shaft 9 close to middle 6 one end of shaft, and 9 lower end of pinch plane shaft is rotatably connected to inclined plate telescopic rod 8, note speed
7 lower end of surface plate is fixedly connected with plane telescopic rod 10, and initial velocity inclined plate 5 is equipped with test carriage 12,12 right end of test carriage
It is fixedly connected with the fast line 13 of note, remembers that 7 upper end of fast surface plate is fixedly connected with weighing apparatus power outer tube 11, is dug among the power outer tube 11 that weighs
There is threading hole 23, remembers that fast 13 right end of line is fixedly connected with copper core displacement inner sleeve 16 through threading hole 23, copper core shifts inner sleeve
16 right ends, which are fixedly connected with, gets paper tape 17 ready, and copper core, which shifts, is equipped with dotted timer 18, dotted timer 18 on the right side of inner sleeve 16
It is fixedly connected with fast surface plate 7 is remembered, gets paper tape 17 ready and match with dotted timer 18, the type that dotted timer 18 is selected is
Electric spark clock may be implemented in doing uniform variable motion experimentation, reduce the acceleration of gravity sliding block
Interference to experimental factors, while making sliding block relative to the direction movement for being parallel to motion profile, reduce oblique movement and makes
At bottom plate frictional force experiment objective factor influence.
Referring to Fig. 1, digging among weighing apparatus power outer tube 11 has rectangular track groove, magnetic pole slide bar is equipped in rectangular track groove
15,15 left end of magnetic pole slide bar is fixedly connected with rectangular track groove inner wall, and copper core shifts inner sleeve 16 and magnetic pole slide bar 15 is socketed, and is led to
The magnetic pole slide bar 15 set in weighing apparatus power outer tube 11 is crossed, convenient for keeping copper core displacement inner sleeve 16 flat along straight line on magnetic pole slide bar 15
Stable sliding moves, and reduces the test carriage 12 connecting by the fast line 13 of note with copper core displacement inner sleeve 16 diagonal on initial velocity inclined plate 5
Mobile situation occurs.
Referring to Fig. 1, copper core displacement inner sleeve 16 is equipped with circular magnetic loop slot around magnetic pole slide bar 15, set in circular magnetic loop slot
There is lasso magnet ring 20, lasso magnet ring 20 is fixedly connected with circular magnetic loop slot inner wall, 15 upper end magnetic pole of magnetic pole slide bar and lasso magnet ring
20 upper end magnetic poles are identical, by shifting the lasso magnet ring 20 added in inner sleeve 16 in copper core, shift inner sleeve 16 convenient for copper core
Suspension is affected by magnetic forces on magnetic pole slide bar 15, thus reduce copper core displacement inner sleeve 16 in sliding process with magnetic pole slide bar 15
Frictional influence.
Referring to Fig. 4, copper core displacement 16 inner wall of inner sleeve is equipped with magnetcisuspension liquid layer 21,21 outer end of magnetcisuspension liquid layer and copper core are shifted
16 inner wall of inner sleeve is fixedly connected, and 21 inner end of magnetcisuspension liquid layer is fitted closely with magnetic pole slide bar 15, by shifting inner sleeve in copper core
The magnetcisuspension liquid layer 21 added in 16 influences to move convenient for being disturbed factor in copper core displacement inner sleeve 16 and 15 inner wall of magnetic pole slide bar
When, it is filled between copper core displacement inner sleeve 16 and magnetic pole slide bar 15 and is lubricated, while magnetcisuspension liquid layer 21 is in copper core displacement
Under lasso magnet ring 20 in casing 16 magnetizes, makes copper core displacement inner sleeve 16 and 15 relative separation of magnetic pole slide bar, reduce magnetic-pole sliding
Bar 15 influences the frictional resistance of copper core displacement inner sleeve 16.
Referring to Fig. 3, being equipped with quarter block 14 on the upside of middle shaft 6,14 lower end of quarter block and the fast surface plate 7 of note are fixed and are connected
It connects, 14 upper end of quarter block is slidably connected with fast line 13 is remembered, by the quarter block 14 added in middle shaft 6, convenient for reducing
Remember that fast line 13 in the friction of 7 junction of initial velocity inclined plate 5 and the fast surface plate of note, reduces when remembering the fast movement of line 13 to test carriage 12
The influence of movement speed.
Referring to Fig. 4,21 main component of magnetcisuspension liquid layer is magnetic grease, it include base load liquid, magnetism in magnetic grease
Particle and surfactant, magnetic particle main component are iron oxide magnetic solid particle, and iron oxide magnetic solid particle passes through
Chemical coprecipitation preparation.
Referring to Fig. 2, inclined plate telescopic rod 8 and 10 right end of plane telescopic rod, which are dug, threaded hole, it is fixed to be equipped in threaded hole
Position bayonet lock 19, positioning clamping pin 19 are connect with threaded hole inner thread, pass through the screw thread on inclined plate telescopic rod 8 and plane telescopic rod 10
The positioning clamping pin 19 of connection is fixed convenient for the position to inclined plate telescopic rod 8 and plane telescopic rod 10 after adjusting, and then right
The height of the fast surface plate 7 of tilt angle and note of initial velocity inclined plate 5 is fixed.
Referring to Fig. 5, digging in weighing apparatus power outer tube 11 has bung flange wire casing, solenoid 22, weighing apparatus are equipped in bung flange wire casing
11 rear end of power outer tube is equipped with battery, and 22 both ends of solenoid and battery are electrically connected, by with solenoid
22 be electrically connected batteries, convenient in 5 tilt angle of initial velocity inclined plate it is big, when the initial velocity of test carriage 12 is larger, make electricity
Magnetic spiral circle 22 is powered, limitation of the enhancing solenoid 22 to the acceleration of copper core displacement inner sleeve 16 on magnetic pole slide bar 15,
And then reduce influence of the external factor to object uniform variable motion.
Before experiment carries out, even speed change experiment bottom plate 1 is adjusted by counselor first, it is made to be in water as far as possible
Level state, the fixation of datum plane plate 2 are benchmark plate, i.e. the smallest plate of material of frictional resistance, it is necessary first to which determination is being arranged
Out when other distracters, which has to the influence factor of object uniform variable motion, test carriage 12 is first certainly in heeling condition
When moving on speed inclined plate 5, there is certain initial velocity, in this course, since what is used on datum plane plate 2 rubs
The smallest plate of material of power is wiped, test carriage 12 carries out speed influence to it, only during mobile on datum plane plate 2
The acceleration of gravity and test carriage 12 itself movement that datum plane plate 2 caused by even speed change experiment 1 tilt angle of bottom plate is subject to
The friction that track generates when being oblique, therefore delaying to acceleration for inner sleeve 16 is shifted by magnetic pole slide bar 15 and copper core
Punching, while smooth sliding on inner sleeve 16 is shifted in copper core using magnetic pole slide bar 15, it records and magnetic-pole sliding bar 15 and weighing apparatus is not installed
When power 11 part-structure of outer tube, the movement speed variable quantity of test carriage 12 is compared two groups of data, to obtain shadow
Influence error amount of the factor of sound to experimental result, and then the data school for the uniformly accelerated motion process to other materials
Just.
The present invention may be implemented in doing uniform variable motion experimentation, reduce the acceleration of gravity sliding block to reality
The interference of influence factor is tested, while moves sliding block relative to the direction for being parallel to motion profile, caused by reducing oblique movement
The objective factor of bottom plate frictional force experiment influences.
The foregoing is intended to be a preferred embodiment of the present invention；But scope of protection of the present invention is not limited thereto.
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
It improves design and is subject to equivalent substitution or change, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of high school physics uniform variable motion experiment comparison apparatus, it is characterised in that: bottom plate (1) is tested including even speed change,
Even speed change experiment bottom plate (1) upper end, which is dug, sets board slot, and described set in board slot is equipped with datum plane plate (2), the benchmark
Material plate folder (3) is equipped on the left of surface plate (2), the material plate folder (3) left end is bonded with datum plane plate (2) left end, described
Even speed change experiment bottom plate (1) upper end, which is dug, rotary axis groove, and the rotary axis groove is located on the right side of datum plane plate (2), the rotary axis groove
It is interior to be equipped with inclined plate shaft (4), it is rotatably connected to initial velocity inclined plate (5) on the inclined plate shaft (4), the initial velocity inclined plate (5)
It is fixedly connected with middle shaft (6) far from inclined plate shaft (4) one end, middle shaft (6) right end is rotatably connected to the fast surface plate of note
(7), the initial velocity inclined plate (5) is fixedly connected with pinch plane shaft (9) close to middle shaft (6) one end, under the pinch plane shaft (9)
End is rotatably connected to inclined plate telescopic rod (8), and fast surface plate (7) lower end of the note is fixedly connected with plane telescopic rod (10), described
Initial velocity inclined plate (5) is equipped with test carriage (12), and test carriage (12) right end is fixedly connected with the fast line (13) of note, described
Remember that fast surface plate (7) upper end is fixedly connected with weighing apparatus power outer tube (11), digging among the weighing apparatus power outer tube (11) has threading hole
(23), fast line (13) right end of the note is fixedly connected with copper core displacement inner sleeve (16) through threading hole (23), and the copper core is moved
Position inner sleeve (16) right end, which is fixedly connected with, to be got ready paper tape (17), is equipped on the right side of copper core displacement inner sleeve (16) and is got timing ready
Device (18), the dotted timer (18) is fixedly connected with fast surface plate (7) is remembered, described to get paper tape (17) and dotted timer ready
(18) match.
2. a kind of high school physics uniform variable motion experiment comparison apparatus according to claim 1, it is characterised in that: described
Digging among weighing apparatus power outer tube (11) has rectangular track groove, is equipped with magnetic pole slide bar (15) in the rectangular track groove, the magnetic pole
Slide bar (15) left end is fixedly connected with rectangular track groove inner wall, and copper core displacement inner sleeve (16) and magnetic pole slide bar (15) covers
It connects.
3. a kind of high school physics uniform variable motion experiment comparison apparatus according to claim 2, it is characterised in that: described
Copper core shifts inner sleeve (16) and is equipped with circular magnetic loop slot around magnetic pole slide bar (15), is equipped with lasso magnet ring in the circular magnetic loop slot
(20), the lasso magnet ring (20) is fixedly connected with circular magnetic loop slot inner wall, magnetic pole slide bar (15) the upper end magnetic pole and lasso
Magnet ring (20) upper end magnetic pole is identical.
4. a kind of high school physics uniform variable motion experiment comparison apparatus according to claim 1, it is characterised in that: described
Copper core shifts inner sleeve (16) inner wall and is equipped with magnetcisuspension liquid layer (21), and magnetcisuspension liquid layer (21) outer end and copper core shift inner sleeve
(16) inner wall is fixedly connected, and magnetcisuspension liquid layer (21) inner end is fitted closely with magnetic pole slide bar (15).
5. a kind of high school physics uniform variable motion experiment comparison apparatus according to claim 1, it is characterised in that: described
Quarter block (14) are equipped on the upside of middle shaft (6), quarter block (14) lower end is fixedly connected with fast surface plate (7) is remembered, institute
It states quarter block (14) upper end and is slidably connected with fast line (13) is remembered.
6. a kind of high school physics uniform variable motion experiment comparison apparatus according to claim 4, it is characterised in that: described
Magnetcisuspension liquid layer (21) main component is magnetic grease, includes that base load liquid, magnetic particle and surface are living in the magnetic grease
Property agent.
7. a kind of high school physics uniform variable motion experiment comparison apparatus according to claim 1, it is characterised in that: described
Inclined plate telescopic rod (8) and plane telescopic rod (10) right end, which are dug, threaded hole, is equipped with positioning clamping pin (19) in the threaded hole,
The positioning clamping pin (19) connect with threaded hole inner thread.
8. a kind of high school physics uniform variable motion experiment comparison apparatus according to claim 1, it is characterised in that: described
The type that dotted timer (18) is selected is electric spark clock.
9. a kind of high school physics uniform variable motion experiment comparison apparatus according to claim 4, it is characterised in that: described
Digging in weighing apparatus power outer tube (11) has bung flange wire casing, is equipped with solenoid (22) in the bung flange wire casing, the weighing apparatus power housing
It manages (11) rear end and is equipped with battery, solenoid (22) both ends and battery are electrically connected.
10. a kind of high school physics uniform variable motion experiment comparison apparatus according to claim 6, it is characterised in that: institute
Stating magnetic particle main component is iron oxide magnetic solid particle, and the iron oxide magnetic solid particle passes through chemical coprecipitation
Preparation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910264377.0A CN109859581B (en) | 2019-04-03 | 2019-04-03 | Contrast tool for high school physics uniform variable speed motion experiment |
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| CN201910264377.0A CN109859581B (en) | 2019-04-03 | 2019-04-03 | Contrast tool for high school physics uniform variable speed motion experiment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111729706A (en) * | 2020-07-30 | 2020-10-02 | 周徇齐 | Physical experiment device for students |
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| CN2187822Y (en) * | 1994-01-20 | 1995-01-18 | 丁定华 | Photoelectric time counting tester |
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| CN109859581B (en) | 2021-02-12 |
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