CN208873356U - Novel elastic ball hits experiment instrument - Google Patents
Novel elastic ball hits experiment instrument Download PDFInfo
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- CN208873356U CN208873356U CN201820744369.7U CN201820744369U CN208873356U CN 208873356 U CN208873356 U CN 208873356U CN 201820744369 U CN201820744369 U CN 201820744369U CN 208873356 U CN208873356 U CN 208873356U
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Abstract
The utility model relates to a kind of novel elastic ball hits experiment instruments, comprising: pedestal, supporting side walls, protractor, slideway, experiment plane, experiment Plane Rotation handle and elastic sphere；Pedestal two sides are vertically fixed supporting side walls, sidewall upper supported on both sides is securely connect with protractor, graduated scale is equipped in protractor inner ring, slideway is equipped in the outer ring of protractor, experiment plane slide-bar is equipped in slideway, it tests plane slide-bar to lock by experiment plane slide-bar fixed screw and slideway, experiment plane slide-bar is connect with experiment plane；Protractor center is equipped with experiment Plane Rotation axle sleeve, and experiment plane upper end is equipped with experiment Plane Rotation axis, and experiment Plane Rotation axis is rotatablely connected to the experiment Plane Rotation axle sleeve at protractor center.The beneficial effects of the utility model are: the utility model had both been able to achieve elastic collision experiment of the elastic sphere on perpendicular, moreover it is possible to turn to different angle by rotational plane and elastic sphere is allowed to carry out elastic collision experiment.
Description
Technical field
The utility model patent is related to experiment instrument more particularly to a kind of novel elastic ball hits experiment instrument.
Background technique
Momentum is a key concept in big physics teaching in secondary school, and momentum is exactly the quality and moving object speed of object
Product, the conservation of momentum refers to group of objects when not by external force, its two momentum perseverance under any two state is equal, then such as
What verifying conservation of momentum is also an important experiment in big physics teaching in secondary school；Traditional verifying conservation of momentum experiment is nothing more than
Two types elastic collision experiment instrument: first, two elastomeric objects collision on horizontal plane, two quality identical two
The momentum of itself is entirely delivered to stationary object by object, a moving object and a stationary object central collision, the object of movement,
Moving object is static to get off, and original static object obtains same momentum and moves；Second, it is a kind of using more cotton ropes
Multiple Deng mass-elastics sphere is fastened, they are suspended on one by one on crossbeam, rope length length is adjusted and is allowed to the height such as different spheres, line
Distance is just sphere diameter between rope, when experiment, by a sphere together with cotton rope with other cotton ropes are coplanar is straightened, with original position
It is set to a larger angle, is then loosed one's grip, sphere moves in a circle, when sphere reaches minimum point, and adjacent ball central collision, the
Momentum can be entirely delivered to second sphere by one sphere, and second sphere passes to third sphere, and so on, until
The last one sphere is passed to, and the last one sphere can rise same height with the first sphere；Both the above experiment instrument is
For proving the law of conservation of momentum.But if two identical elastic spheres of quality are on any inclined inclined-plane
Whether the law of conservation of momentum is still set up, and so far, there are no such laboratory apparatus, i.e., the elastic balls of two phase homogenous quantities
Body is pulled in the collision experiment instrument in any inclined ramp by cotton rope.
Utility model content
The purpose of the utility model is to overcome deficiencies in the prior art, provide a kind of novel elastic ball hits experiment
Instrument.
This novel elastic ball hits experiment instrument, comprising: pedestal, supporting side walls, protractor, slideway, experiment plane, reality
Test Plane Rotation handle and elastic sphere；Pedestal two sides are vertically fixed supporting side walls, sidewall upper supported on both sides and protractor jail
It is solidly connected, is equipped with graduated scale in protractor inner ring, be equipped with slideway in the outer ring of protractor, experiment plane slide-bar is equipped in slideway,
It tests plane slide-bar to lock by experiment plane slide-bar fixed screw and slideway, experiment plane slide-bar is connect with experiment plane；Amount
Angle device center is equipped with experiment Plane Rotation axle sleeve, and experiment plane upper end is equipped with experiment Plane Rotation axis, and experiment Plane Rotation axis turns
It is dynamic to be connected in the experiment Plane Rotation axle sleeve at protractor center；Experiment plane rear end middle is provided with experiment Plane Rotation
Handle；Elastic sphere adjusts long thread hollow screw to be fixed at experiment Plane Rotation axis using sphere lead and by the way that sphere lead is fixed
On sphere lead fixed adjust on long thread hollow screw hole.
As preferred: experiment Plane Rotation handle is fixedly connected by handler with experiment plane fixed edge with experiment plane,
Reinforcing is securely enclosed by testing plane fixed handle between experiment Plane Rotation handle and handler and experiment plane fixed edge.
As preferred: sphere lead is fixed to adjust long thread hollow screw lower end to perforate to adjust spiral shell button lower end ligament, on
End is equipped with extraordinarily thick hole to place coarse adjustment lead length coiling.
As preferred: being coiling among coarse adjustment lead length coiling, both ends are that radius is greater than the same of coiling
Heart disk, coarse adjustment lead length coiling lower end are circle sheet, and edge is equipped with equidistant coarse adjustment lead length
Coiling card slot, coarse adjustment lead length coiling upper end are that coarse adjustment coiling holds end, are cylindrical and prominent
In the fixed tune long thread hollow screw upper surface of sphere lead.
As preferred: elastic sphere lower part is the thick eyelet of lead, and top is the thin eyelet of lead, and the thick eyelet of lead and lead are thin
It is ball centre between eyelet.
The beneficial effects of the utility model are:
1, the utility model had both been able to achieve elastic collision experiment of the elastic sphere on perpendicular, moreover it is possible to flat by rotating
Face, which turns to different angle, allows elastic sphere to carry out elastic collision experiment.
2, the utility model is the collision experiment realized in any angle elastic sphere, measures inclined-plane using protractor
Angle is turned over, precision reaches 30 points.
3, the utility model is to realize elastic sphere central collision, has devised to be parallel to test on experiment Plane Rotation axis and put down
The punching of face direction adjusts long thread hollow screw to adjust lead length method using sphere lead is fixed.
4, the utility model uses holding handle structure and rotates to experiment plane, to change experiment planar inclination, side
Realize central collision on different inclined surface between elastic sphere.
5, the utility model draws grid chart in experiment plane, can definitely observe before elastic sphere collision and touch
Hit rear position.
6, the utility model is skilful using the bolt playing skill of elastic sphere uniqueness diameter punching, and center is boundary, upper thin, lower thick, draws
Line penetrates upper end from lower end and is pierced by, intermediate barrier after knotting.
7, the utility model is drawn using the fixed unique texture for adjusting long thread hollow screw of sphere lead by coarse adjustment
The short coiling of wire length carries out coarse adjustment to lead, is carried out using the fixed spiral up and down for adjusting long thread hollow screw entirety of sphere lead
Fine tuning especially has innovation and inventive features.
Detailed description of the invention
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is the utility model side view；
Fig. 3 is experiment Plane Rotation protractor front view；
Fig. 4 is to hold handle, experiment plane, sphere to hang connection side view；
Fig. 5 is experiment plane, rotation axis and the fixed long thread hollow screw hole schematic diagram of tune of sphere lead；
Fig. 6, which is that sphere lead is fixed, adjusts long thread hollow screw schematic diagram；
Fig. 7 is elastic sphere and connects string holes front view；
Fig. 8 is experiment plane grid front view；
Fig. 9 is the central collision state diagram of elastic sphere vertical direction；
Figure 10 is that experiment instrument rotates the angle θ perspective view；
Figure 11 is parallel to in-plane with sphere edge for the experiment instrument rotation angle θ and turns overAngle perspective view.
Description of symbols: 1, pedestal, 2, supporting side walls, 3, protractor, 3-1, graduated scale, 4, slideway, 5, experiment plane
Slide-bar, 6, experiment plane slide-bar fixed screw, 7, experiment Plane Rotation axle sleeve, 8, experiment plane, 8-1, experiment Plane Rotation axis,
The fixed long thread hollow screw hole of tune of 8-2, sphere lead, 9, experiment Plane Rotation handle, 9-1 experiment plane fixed handle securely enclose, 9-
2, handler and experiment plane fixed edge, 10, elastic sphere, 10-1, sphere lead, 10-2, sphere lead are fixed to adjust long screw thread
10-21, cored screw adjusts the perforation of spiral shell button lower end ligament, 10-22, coarse adjustment lead length coiling, 10-23, rough
Lead length coiling card slot is adjusted, 10-24, coarse adjustment coiling hold end, the thick eyelet of 10-3, lead, in 10-4, sphere
The heart, the thin eyelet of 10-5, lead.
Specific embodiment
The utility model is described further below with reference to embodiment.The explanation of following embodiments is only intended to help to manage
Solve the utility model.It should be pointed out that for those skilled in the art, not departing from the utility model principle
Under the premise of, several improvements and modifications can be made to this utility model, these improvement and modification also fall into the utility model
In scope of protection of the claims.
As shown in Figures 1 to 5, the novel elastic ball hits experiment instrument fixes two etc. in 1 two sides of pedestal vertically
Big supporting side walls 2 are securely connect with protractor 3 respectively in 2 upper end of side wall supported on both sides, are arranged in 3 inner ring of protractor useful
It measures the graduated scale 3-1 of angle, the outer ring of protractor 3 is provided with experiment plane slide-bar 5 and slideway 4, tests plane slide-bar 5
Rotation is slided in slideway 4 with experiment plane 8, after experiment plane 8, which turns over angle, to be determined, using the fixed spiral shell of experiment plane slide-bar
Experiment plane slide-bar 5 is firmly locked by silk 6 with slideway 4；It is arranged one for testing the reality of the rotation of plane 8 at 3 center of protractor
Plane Rotation axle sleeve 7 is tested, experiment 8 upper end of plane has the experiment Plane Rotation axis 8-1 of a corner (right angle), and experiment plane turns
Moving axis 8-1 is rotatablely connected to the experiment Plane Rotation axle sleeve 7 at 3 center of protractor, and experiment plane 8 can surround protractor 3
7 continuous rotation of experiment Plane Rotation axle sleeve, experiment 8 rear end middle of plane is provided with experiment Plane Rotation handle 9, experiment is flat
Face handler 9 is fixedly connected by handler with experiment plane fixed edge 9-2 with experiment plane 8, is tested Plane Rotation handle 9 and is turned
9-1 reinforcing is securely enclosed by testing plane fixed handle between dynamic handle and experiment plane fixed edge 9-2；Elastic sphere 10 is drawn using sphere
Line 10-1 is simultaneously drawn by the fixed sphere for adjusting long thread hollow screw 10-2 to be fixed on experiment Plane Rotation axis 8-1 of sphere lead
Line is fixed to be adjusted on long thread hollow screw hole 8-2, and sphere lead is fixed to adjust the long adjustable sphere lead of thread hollow screw 10-2
10-1 length is allowed to elastic sphere 10 and is in sustained height.
The long lower end thread hollow screw 10-2 is adjusted to wear to adjust spiral shell button lower end ligament as shown in fig. 6, sphere lead is fixed
Hole 10-21, upper end is extraordinarily thick hole, for placing coarse adjustment lead length coiling 10-22, coarse adjustment lead length coiling
Coiling among 10-22 is enclosed, both ends are the concentric disk that radius is greater than coiling, and lower end is circle sheet, between edge is excavated with etc.
Away from coarse adjustment lead length coiling card slot 10-23, be used to card line, upper end be coarse adjustment coiling hold end 10-24,
It is cylinder and protrudes from the fixed long upper surface thread hollow screw 10-2 of tune of sphere lead, is pulled out with being conducive to be grasped with hand
Facilitate coiling.
As shown in Fig. 1,2,4,5,6,7, sphere lead 10-1 penetrates logical from the thick eyelet 10-3 of 10 lower end lead of elastic sphere
It crosses the thin eyelet 10-5 of lead to come out, the sphere lower end lead 10-1 knots between the thick eyelet 10-3 of lead and the thin eyelet 10-5 of lead
It is blocked at ball centre 10-4, the sphere upper end lead 10-1 is pierced by from lead eye position, is then passed through the fixed long spiral shell of tune of sphere lead
The adjusting spiral shell button lower end ligament of the line cored screw 10-2 10-21 that perforates is pierced by upper end, and is wound on coarse adjustment lead length
On coiling 10-22, it is appropriate length between elastic sphere 10 and experiment Plane Rotation axis 8-1 to sphere lead 10-1, will draws
Line 10-1 is stuck in the coarse adjustment lead length coiling card slot 10-23 of coarse adjustment lead length coiling 10-22, then will
Coarse adjustment lead length coiling 10-22 puts the fixed corresponding position for adjusting long thread hollow screw 10-2 of sphere lead into, and
By the fixed fixed tune length of sphere lead for adjusting long thread hollow screw 10-2 to be mounted on experiment Plane Rotation axis 8-1 of sphere lead
In thread hollow screw hole 8-2, similarly the fixed long thread hollow screw 10-2 of tune of other six sphere leads can be mounted on experiment
The sphere lead of Plane Rotation axis 8-1 is fixed to be adjusted in long thread hollow screw hole 8-2, is then rotated up and down screwed seven respectively
A sphere lead is fixed to adjust long thread hollow screw 10-2, is allowed to ball centre 10-4 and is in sustained height.
Experimental procedure and method:
1, vertical direction perfect elasticity ball hits are tested
(1) it holds experiment Plane Rotation handle 9 and turns over a small angle in the counterclockwise direction, to be unlikely to elastic sphere 10
Movement is collided with experiment plane 8, will be tested plane slide-bar 5 with experiment plane slide-bar fixed screw 6 and is fixed together with slideway 4,
As shown in Figure 1；
(2) it holds elastic sphere a and lead is straightened, along φ is turned over counterclockwise, then let go, elastic sphere a will do circle
Zhou Yundong reaches in situ and elastic sphere b central collision, and then elastic sphere b hits elastic sphere c, and elastic sphere c hits elastic sphere d,
Elastic sphere d hits elastic sphere e, and elastic sphere e hits elastic sphere f, and elastic sphere f hits elastic sphere j, if elastic sphere collides
Process does not have energy loss, is known by (5) formula, and obtained by the conservation of momentum, elastic sphere j can obtain identical as elastic sphere a after collision
Rate vj=va, last elastic sphere j lifting height and elastic sphere a lift that position is identical, i.e. elastic sphere j reaches highest point
Its lead and original position angle are also φ, as shown in Figure 9.
2, the perfectly elastic impact experiment on inclined direction
(1) experiment Plane Rotation handle 9 is held along θ is rotated clockwise, and will be tested with experiment plane slide-bar fixed screw 6
Plane slide-bar 5 is fixed together with slideway 4, as shown in Fig. 1,2,10；
(2) it holds elastic sphere a and lead is straightened, turn over φ counterclockwise, then let go, this initial elasticity sphere can be
Restoring force F1Under effect, move in a circle；
(3) elastic sphere c, elastic sphere can be hit with elastic sphere b central collision, elastic sphere b when elastic sphere a reaches original position
C hits elastic sphere d, and elastic sphere d hits elastic sphere e, and elastic sphere e hits elastic sphere f, and elastic sphere f hits elastic sphere j,
If each elastic sphere collision process does not have energy loss, obtained by (5) formula with the conservation of momentum, after collision elastic sphere j can obtain with
Elastic sphere a phase same rate vj=va, it is identical that last elastic sphere j lifting height and elastic sphere a lift position, i.e. elastic ball
Body j reaches its lead of highest point and original position angle is also φ, as shown in figure 11.
Experimental principle:
Defined according to the law of conservation of momentum: if a certain mechanical system is not zero by external force or external force vector sum, system is total
Momentum remains unchanged.If first elastic sphere quality m1, collision front and back speed is respectively v1、v1', second elastic ball constitution
Measure m2, collision front and back speed is respectively v2、v2', had according to the law of conservation of momentum
m1v1+m2v2=m1v1′+m2′......(1)
Since collision process is perfectly elastic impact, therefore conservation of mechanical energy
Solution (1), (2) formula obtain
If two elastic spheres are identical in quality, static, m before second elastic sphere collides1=m2, v2=0, then by
(3), (4) Shi Ke get: v1'=0, v2'=v1.That is, identical two elastic spheres of quality, when a sport ball
After body collides another static sphere, moving sphere is static to get off, and originally motionless sphere can obtain and former moving sphere phase
It is moved with speed along the protocorm body direction of motion.
Experiment one: vertical direction perfect elasticity ball hits experiment
The case where vertical direction perfectly elastic impact experiment, i.e., sphere lead and perpendicular angle are 0 °, observation is last
One elastic sphere j is hit hoisting depth, if it is identical as former elastic sphere a raising, i.e. elastic sphere a starting lift position with
Whether elastic sphere j rises to highest point position identical.
If sphere a, b, c, d, e, f, j mass is respectively ma、mb、mc、md、me、mf、mj, and
ma=mb=mc=md=me=mf=mj......(5)
If by elastic sphere a pull-up, and its lead and former vertical direction fall to minimum point velocity v at φ after letting goa,
With elastic sphere b central collision, elastic sphere b hits elastic sphere c, and elastic sphere c hits elastic sphere d, and elastic sphere d hits elastic sphere
E, elastic sphere e hit elastic sphere f, and elastic sphere f hits elastic sphere j, if each elastic sphere collision process does not have energy loss,
It is obtained by (5) formula with the conservation of momentum, elastic sphere j can be obtained and sphere a phase same rate v after collisionj=va, on last elastic sphere j
Rise can originate that lift position same with elastic sphere a, i.e. elastic sphere j lead and vertical former angular separation is also φ.Pass through
Experimental demonstration observes such a result.
Perfectly elastic impact experiment in experiment two, inclined direction
If experiment plane turns over angle, θ, i.e. plane where elastic sphere lead and perpendicular angle theta, then grabbed with hand
Live in elastic sphere a is straightened lead and turns over φ along with experiment plane parallel direction, at this point, elastic sphere is put in inclined-plane moment,
Elastic sphere a force analysis situation, as shown in figure 11, the gravity m of elastic sphere straight downaG, lead is along lead direction to bullet
Property sphere pulling force f, the inclined-plane elastic force N upward to elastic sphere, then have
N=mgsin θ ... (6)
F=mgcos θ sin φ ... (7)
Gravity can be decomposed into normal pressure i.e. sphere to the elastic force N '=mgsin θ on inclined-plane, wherein N ' and N be active force with
Reaction force；Along inclined-plane sliding force F=mgcos θ, which can be analyzed to two power again, has respectively restored F1(tangentially side
To), reaction force F with lead lifting the ball power f2, i.e.,
In restoring forceUnder effect, elastic sphere a will move in a circle to origin-location
It is collided with elastic sphere b, then elastic sphere b hits elastic sphere c, and elastic sphere c hits elastic sphere d, and elastic sphere d hits elasticity
Sphere e, elastic sphere e hit elastic sphere f, and elastic sphere f hits elastic sphere j, if each elastic sphere does not have energy in collision process
Amount loss, is obtained by (5) formula with the conservation of momentum, elastic sphere j can be obtained and sphere a phase same rate v after collisionj=va, last elasticity
Sphere j lifting height can be originated with elastic sphere a lifts height together, i.e. elastic sphere j lead and original position is (along surface slope side
To) angle is still φ.Such a result is observed by experimental demonstration.
Claims (5)
1. a kind of novel elastic ball hits experiment instrument characterized by comprising pedestal (1), supporting side walls (2), protractor
(3), slideway (4), experiment plane (8), experiment Plane Rotation handle (9) and elastic sphere (10)；Pedestal (1) two sides are vertically fixed
Supporting side walls (2), side wall (2) upper end supported on both sides are securely connect with protractor (3), are equipped with graduated scale in protractor (3) inner ring
(3-1) is equipped with slideway (4) in the outer ring of protractor (3), experiment plane slide-bar (5) is equipped in slideway (4), tests plane slide-bar
(5) it is locked by experiment plane slide-bar fixed screw (6) and slideway (4), experiment plane slide-bar (5) is connect with experiment plane (8)；
Protractor (3) center is equipped with experiment Plane Rotation axle sleeve (7), and experiment plane (8) upper end is equipped with experiment Plane Rotation axis (8-1),
It tests in Plane Rotation axis (8-1) rotation connection to the experiment Plane Rotation axle sleeve (7) at protractor (3) center；It tests plane (8)
Rear end middle is provided with experiment Plane Rotation handle (9)；Elastic sphere (10) is drawn using sphere lead (10-1) and by sphere
The fixed sphere lead for adjusting long thread hollow screw (10-2) to be fixed in experiment Plane Rotation axis (8-1) of line is fixed to adjust long screw thread
In hollow threaded bore (8-2).
2. novel elastic ball hits experiment instrument according to claim 1, it is characterised in that: experiment Plane Rotation handle (9)
It is fixedly connected by handler with experiment plane fixed edge (9-2) with experiment plane (8), tests Plane Rotation handle (9) and rotate
(9-1) reinforcing is securely enclosed by testing plane fixed handle between handle and experiment plane fixed edge (9-2).
3. novel elastic ball hits experiment instrument according to claim 1, it is characterised in that: sphere lead is fixed to adjust long spiral shell
The line cored screw lower end (10-2) is to adjust spiral shell button lower end ligament to perforate (10-21), and it is rough to place that upper end is equipped with extraordinarily thick hole
It adjusts lead length coiling (10-22).
4. novel elastic ball hits experiment instrument according to claim 3, it is characterised in that: coarse adjustment lead length around
It is coiling among coil (10-22), both ends are the concentric disk that radius is greater than coiling, coarse adjustment lead length coiling
The lower end (10-22) is circle sheet, and edge is equipped with equidistant coarse adjustment lead length coiling card slot (10-23), roughly
Adjusting the lead length coiling upper end (10-22) is that coarse adjustment coiling holds end (10-24), for cylinder and is protruded from
Sphere lead is fixed to adjust long thread hollow screw (10-2) upper surface.
5. novel elastic ball hits experiment instrument according to claim 1, it is characterised in that: elastic sphere (10) lower part is
The thick eyelet of lead (10-3), top are the thin eyelet of lead (10-5), the thick eyelet of lead (10-3) and the thin eyelet of lead (10-5) it
Between be ball centre (10-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820744369.7U CN208873356U (en) | 2018-05-18 | 2018-05-18 | Novel elastic ball hits experiment instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820744369.7U CN208873356U (en) | 2018-05-18 | 2018-05-18 | Novel elastic ball hits experiment instrument |
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| Publication Number | Publication Date |
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| CN208873356U true CN208873356U (en) | 2019-05-17 |
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ID=66461700
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820744369.7U Expired - Fee Related CN208873356U (en) | 2018-05-18 | 2018-05-18 | Novel elastic ball hits experiment instrument |
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| Country | Link |
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| CN (1) | CN208873356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389480A (en) * | 2018-05-18 | 2018-08-10 | 浙江大学城市学院 | A kind of novel elastic ball hits experiment instrument |
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2018
- 2018-05-18 CN CN201820744369.7U patent/CN208873356U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389480A (en) * | 2018-05-18 | 2018-08-10 | 浙江大学城市学院 | A kind of novel elastic ball hits experiment instrument |
| CN108389480B (en) * | 2018-05-18 | 2023-08-15 | 浙江大学城市学院 | Elastic sphere collision experiment instrument |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 Termination date: 20200518 |
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| CF01 | Termination of patent right due to non-payment of annual fee |