CN206411961U - A kind of physics teaching experimental device for freely falling body - Google Patents
A kind of physics teaching experimental device for freely falling body Download PDFInfo
- Publication number
- CN206411961U CN206411961U CN201621264715.9U CN201621264715U CN206411961U CN 206411961 U CN206411961 U CN 206411961U CN 201621264715 U CN201621264715 U CN 201621264715U CN 206411961 U CN206411961 U CN 206411961U
- Authority
- CN
- China
- Prior art keywords
- support arm
- experiment
- experimental device
- falling body
- physics teaching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Instructional Devices (AREA)
Abstract
The utility model belongs to teaching equipment technical field, is specifically related to a kind of for physics teaching experimental device.A kind of physics teaching experimental device for freely falling body that the utility model is provided, including the different support arm of several length being arranged on experiment table top, the fixing end of each support arm is packed in experiment mesa sides by the second rotary shaft and can rotated by axle center of rotary shaft, the free end of support arm is flexibly connected by first rotating shaft with experiment bin, experiment ball is placed in experiment bin, experiment bin is provided with locating ring, cotton rope is fixed with locating ring, the door that experiment bin is opened when cotton rope is dropped allows experiment dip of ball, cotton rope is wound on the fixed pulley on support arm and is fixedly connected with the second rotary shaft, test table top and be provided with the pendant thing induction band corresponding with each support arm, provided with the inductor being connected with timer in pendant thing induction band.The utility model is simple in construction, makes easy, and ensure that data acquirement accurately and quickly calculates result of calculation.
Description
Technical field
The utility model belongs to teaching equipment technical field, is specifically related to a kind of for physics teaching experimental device.
Background technology
Current prior art, as shown in figure 1, in school instruction, according to Newton's laws of motion, only by Action of Gravity Field
" freedom " falling bodies that initial velocity is zero, if the stroke that it is moved is not very big, its equation of motion can be represented by the formula：
Wherein s is the distance of the movement of falling object, and t is by the time used in this section of distance, if s takes a series of numbers
Value, need to measure corresponding time t respectively, although be not difficult to verify above-mentioned equation by experiment.But in actually measurement, it is difficult to survey
At the time of the fixed freely falling body setting in motion, therefore this imagination is difficult to.
If counted the freely falling body is at the time of static setting in motion reaches pick-up point by stretch journey s0
When, measure it and continue to fall freely through the time t used in stretch journey s, can be obtained according to formula (2)：
Here it is the movement of falling object equation that initial velocity is not zero.Wherein v0 is that the freely falling body passes through speed during A points.
Formula (2) can be written as form：
Make y=s/t.Obvious y (t) is a unitary linear function.If s takes a series of set-points, again by experiment point
Corresponding t values are not measured, then makees y-t empirical curves and can verify that above-mentioned equation, and this imagination is not difficult to realize.
But be difficult to carry out vivid demonstration and calculating according to existing teaching aid in teaching, in evaluation
When, data are also difficult to ensure accurate.
Utility model content
The technical problems to be solved in the utility model is, it is desirable to provide the convenient teaching of one kind, the vivid progress of energy
Physical Experiment is demonstrated, and quickly adjustment different height, to realize the quick reading of data, reaches more rapidly easily in an experiment
Teaching demonstration, improves the efficiency of teaching, while interest of the student to physical knowledge can also be improved.
To solve the above problems, a kind of physics teaching experimental device for freely falling body that the utility model is provided, bag
The different support arm of several length being arranged on experiment table top is included, the fixing end of each support arm is solid by the second rotary shaft
Mounted in testing mesa sides and being rotated by axle center of rotary shaft, the free end of the support arm passes through first rotating shaft and experiment bin is lived
Experiment ball is placed in dynamic connection, the experiment bin, the experiment bin is provided with locating ring, the locating ring and is fixed with cotton rope,
The door that experiment bin is opened when the cotton rope is dropped allows experiment dip of ball, and the cotton rope is wound on the fixed pulley on support arm and with the
Two rotary shafts are fixedly connected, and the experiment table top is provided with the pendant thing induction band corresponding with each support arm, the pendant thing sensing
Band is interior to be provided with inductor that is regularly arranged and being connected with timer.
It is preferred that technical scheme, the pendant thing induction band set in the groove on experiment table top.
It is preferred that technical scheme, the experiment table top side relative with support arm, which is provided with, to be used to adjust the angle of support arm angle
Adjustment plate, the arc edge of the angle adjustment disk is provided with angle index, and the maximum angle of the angle index is 90 degree.
It is preferred that technical scheme, the angle adjustment disk is provided with chute, and being provided with the chute is used to fix set angle
The locating rod of the support arm of degree, the locating rod is fixed and dismantled with chute provided with fastening bolt.
It is preferred that technical scheme, the end of second rotary shaft is provided with knob, and the knob is 8 fonts.
It is preferred that technical scheme, the side of the experiment table top is provided with handle.
It is preferred that technical scheme, the upper surface of the experiment table top is vertically arranged provided with length scale and with support arm.
It is preferred that technical scheme, the experiment table top is provided with connection on the vavuum pump that be connected with vacuum (-tight) housing, the turn-button
There is motor, the motor is rotated and closed by power supply and wireless control switch.
It is preferred that technical scheme, the vacuum (-tight) housing is made up of transparent material.
The physics teaching experimental device for freely falling body that the utility model is provided, it is simple in construction, make easy, can
Ensure data acquirement accurately and quickly calculates result of calculation.
Brief description of the drawings
Fig. 1 is the three-dimensional structure diagram of prior art；
Fig. 2 is the front view of embodiment 1 of the physics teaching experimental device described in the utility model for freely falling body；
Fig. 3 is the top view of embodiment 1 of the physics teaching experimental device described in the utility model for freely falling body；
Fig. 4 is the top view of embodiment 2 of the physics teaching experimental device described in the utility model for freely falling body.
Reference
In figure：1-experiment ball, 2-experiment bin, 3-locating ring, 4-first rotating shaft, 5-fixed pulley, 6-cotton rope, 7-
Support arm, 8-chute, 9-bolt, 10-angle adjustment disk, 11-turn-button, the 12-the second rotating shaft, 13-experiment table top, 14-meter
When device, 15-angle index, 16-locating rod, 17-groove, 18-pendant thing induction band, 19-handle, 20-length scale,
21-vavuum pump, 22-vacuum (-tight) housing, 23-motor, 24-power supply and wireless control switch.
Embodiment
Specific embodiment of the utility model is described in detail below with reference to accompanying drawing.
Embodiment 1
As shown in Fig. 2 to 3, a kind of physics teaching experimental device for freely falling body that the utility model is provided, including
It is arranged in the different support arm 7 of several length tested on table top 13, the present embodiment, support arm 7 is 5, and length is respectively 1
Rice, 0.9 meter, 0.8 meter, 0.6 meter and 0.4 meter, the fixing end of each support arm 7 is packed in experimental bench by the second rotary shaft 12
The side of face 13 and can be that axle center rotates with rotary shaft 12, it is movable with experiment bin 2 that the free end of the support arm 7 passes through first rotating shaft 4
Experiment ball 1 is placed in connection, the experiment bin 2, the experiment bin 2 is provided with locating ring 3, the locating ring 3 and fixes wired
Rope 6, while the door for opening the experiment bin 2 on each support arm 7 allows experiment ball 1 to fall when the cotton rope 6 is dropped, each tests ball
1 simultaneously never level experiment bin 2 fall onto induction band 18, the cotton rope 6 be wound on the fixed pulley 5 on support arm 7 and with
Second rotary shaft 12 is fixedly connected, and the experiment table top 13 is provided with the pendant thing induction band 18 corresponding with each support arm 7, described
Fall and inductor that is regularly arranged and being connected with timer 14 is provided with thing induction band 18, inductor respectively passes through the time fallen
Timer 14 is write down and shows that all test balls 1 fall the time used.The pendant thing induction band 18 is set on experiment table top 13
Groove 17 in, the experiment table top 13 side relative with support arm 7 is provided with the angle adjustment disk for adjusting the angle of support arm 7
10, the arc edge of the angle adjustment disk 10 is provided with angle index 15, and the maximum angle of the angle index 15 is 90 degree, institute
Angle adjustment disk 10 is stated provided with chute 8, according to the angle for setting support arm 7 and experiment table top 13, such as 30 degree, 45 degree or 60 degree
When, each support arm 7 is calculated to the height of experiment table top according to Pythagorean theorem, interior be provided with of the chute 8 is used to fix set angle
The locating rod 16 of the support arm 7 of degree, the locating rod 16 is fixed and dismantled with chute 8 provided with fastening bolt 9, for fixing
Angle is set not change.The end of second rotary shaft 12 is provided with knob 11, and the knob 11 is 8 fonts, the reality
The side for testing table top 13 is provided with handle 19, is convenient for carrying and shifts one's position, and the upper surface of the experiment table top 13 is carved provided with length
Spend and be vertically arranged with support arm 7, time, altitude information according to used in obtaining, with formula (1)
The movement of falling object is calculated.
Embodiment 2
The present embodiment is further improved on the basis of embodiment 1, and difference is, and the one of the utility model offer
The physics teaching experimental device for freely falling body is planted, wherein the experimental bench face 13 is provided with the vacuum being connected with vacuum (-tight) housing 22
Pump, can realize and motor 23 is connected with the experiment with falling objects under vacuum, the turn-button 11, the motor 23 passes through in teaching
Power supply and wireless control switch 24 are rotated and closed, and the vacuum (-tight) housing 22 is made up of transparent material, for more convenient observation
Experimentation and reading data.
The utility model preferred embodiment and embodiment are explained in detail above in conjunction with accompanying drawing, but this
Utility model is not limited to the above-described embodiment and examples, in the knowledge that those skilled in the art possess, may be used also
So that various changes can be made without departing from the concept of the premise utility.
Claims (9)
1. a kind of physics teaching experimental device for freely falling body, including several length being arranged on experiment table top (13)
Different support arm (7), it is characterised in that the fixing end of each support arm (7) is packed in experimental bench by the second rotating shaft (12)
Face (13) side and can be that axle center rotates with the second rotating shaft (12), the free end of the support arm (7) passes through first rotating shaft (4) and reality
Testing position (2) is flexibly connected, and experiment ball (1) is placed in the experiment bin (2), and the experiment bin (2) is provided with locating ring (3), institute
State and cotton rope (6) is fixed with locating ring (3), the door that experiment bin (2) is opened when the cotton rope (6) drops allows experiment ball (1) to fall
Fall, be fixedly connected on the fixed pulley (5) that the cotton rope (6) is wound on support arm (7) and with the second rotating shaft (12), the experiment table top
(13) it is provided with the pendant thing induction band (18) corresponding with each support arm (7), the pendant thing induction band (18) provided with rule row
Row and the inductor being connected with timer (14).
2. it is used for the physics teaching experimental device of freely falling body according to claim 1, it is characterised in that the pendant thing sensing
Band (18) is set in the groove (17) on experiment table top (13).
3. it is used for the physics teaching experimental device of freely falling body according to claim 1, it is characterised in that the experiment table top
(13) side relative with support arm (7) is provided with the angle adjustment disk (10) for being used for adjusting support arm (7) angle, the angle adjustment disk
(10) arc edge is provided with angle index (15), and the maximum angle of the angle index (15) is 90 degree.
4. it is used for the physics teaching experimental device of freely falling body according to claim 3, it is characterised in that the angle adjustment
Disk (10) is provided with the locating rod (16) that the support arm (7) for being used to fix set angle is provided with chute (8), the chute (8), institute
Locating rod (16) is stated to be fixed and dismantle with chute (8) provided with fastening bolt (9).
5. it is used for the physics teaching experimental device of freely falling body according to claim 1, it is characterised in that second rotating shaft
(12) end is provided with turn-button (11), and the turn-button (11) is 8 fonts.
6. it is used for the physics teaching experimental device of freely falling body according to claim 1, it is characterised in that the experiment table top
(13) side is provided with handle (19).
7. it is used for the physics teaching experimental device of freely falling body according to claim 6, it is characterised in that the experiment table top
(13) upper surface is vertically arranged provided with length scale and with support arm (7).
8. it is used for the physics teaching experimental device of freely falling body according to claim 5, it is characterised in that the experiment table top
(13) provided with the vavuum pump being connected with vacuum (-tight) housing (22), motor (23), the motor (23) are connected with the turn-button (11)
Rotated and closed by power supply and wireless control switch (24).
9. it is used for the physics teaching experimental device of freely falling body according to claim 8, it is characterised in that the vacuum (-tight) housing
(22) it is made up of transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621264715.9U CN206411961U (en) | 2016-11-21 | 2016-11-21 | A kind of physics teaching experimental device for freely falling body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621264715.9U CN206411961U (en) | 2016-11-21 | 2016-11-21 | A kind of physics teaching experimental device for freely falling body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206411961U true CN206411961U (en) | 2017-08-15 |
Family
ID=59547844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621264715.9U Expired - Fee Related CN206411961U (en) | 2016-11-21 | 2016-11-21 | A kind of physics teaching experimental device for freely falling body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206411961U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731065A (en) * | 2017-11-22 | 2018-02-23 | 黄跃 | A kind of physics teaching experiment with falling objects equipment |
| CN112419860A (en) * | 2020-11-03 | 2021-02-26 | 雷梓辰 | Rod body connecting assembly and pluggable teaching aid |
| CN113391091A (en) * | 2021-05-28 | 2021-09-14 | 浙江大学 | Device and method for measuring actual acceleration of free falling body under rotating coordinate system |
-
2016
- 2016-11-21 CN CN201621264715.9U patent/CN206411961U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731065A (en) * | 2017-11-22 | 2018-02-23 | 黄跃 | A kind of physics teaching experiment with falling objects equipment |
| CN112419860A (en) * | 2020-11-03 | 2021-02-26 | 雷梓辰 | Rod body connecting assembly and pluggable teaching aid |
| CN113391091A (en) * | 2021-05-28 | 2021-09-14 | 浙江大学 | Device and method for measuring actual acceleration of free falling body under rotating coordinate system |
| CN113391091B (en) * | 2021-05-28 | 2022-04-01 | 浙江大学 | Device and method for measuring actual acceleration of free falling body under rotating coordinate system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206411961U (en) | A kind of physics teaching experimental device for freely falling body | |
| CN203895007U (en) | Circular motion comprehensive experimental platform | |
| CN202904959U (en) | Enclosed multifunctional simple pendulum experimental apparatus | |
| CN205318710U (en) | Teaching aid is demonstrated on inclined plane for physical teaching | |
| CN104504968B (en) | A method of measurement acceleration of gravity | |
| CN202549114U (en) | Electric centripetal force quantitative analysis demonstration instrument | |
| CN108877425A (en) | A kind of high school physics study apparatus for demonstrating | |
| CN206774044U (en) | A kind of new high school physicses dynamics experimental device | |
| CN200959180Y (en) | Teaching equipment for measuring gravity accelerated speed | |
| CN205300830U (en) | Air heat engine torgue measurement display device | |
| CN208819469U (en) | A kind of apparatus for demonstrating for experiment with falling objects | |
| CN104504965B (en) | The method of momentum theorem under multifunction dynamic research device and verification inotropic action | |
| CN207515696U (en) | A kind of swing type for hydraulic generator rotor detection surveys circle device | |
| CN103971566A (en) | Circular motion comprehensive-experiment platform | |
| CN212112921U (en) | Conveyer belt type friction force experimental instrument | |
| CN203480737U (en) | Demonstration instrument for centripetal force exploration | |
| CN208819467U (en) | It is a kind of for verifying the experimental provision of conservation of mechanical energy | |
| CN209641183U (en) | A kind of physics teaching acceleration test apparatus for demonstrating | |
| CN107705675B (en) | A kind of experimental provision using cylinder weight measurement acceleration of gravity | |
| CN204286296U (en) | A kind of link | |
| CN207528587U (en) | A kind of dry method powder detection device | |
| CN104075660B (en) | Working table used for fixing magnetic conductive workpiece and optimeter thereof | |
| CN214587550U (en) | Physics teaching presentation device | |
| CN104464459A (en) | Multifunctional kinetic study device | |
| CN210627610U (en) | Student physical experiment simulation device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170815 Termination date: 20181121 |