CN202838756U - Experimental device for testing and verifying momentum conservation in small ball collision process - Google Patents
Experimental device for testing and verifying momentum conservation in small ball collision process Download PDFInfo
- Publication number
- CN202838756U CN202838756U CN 201220514024 CN201220514024U CN202838756U CN 202838756 U CN202838756 U CN 202838756U CN 201220514024 CN201220514024 CN 201220514024 CN 201220514024 U CN201220514024 U CN 201220514024U CN 202838756 U CN202838756 U CN 202838756U
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- China
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- electromagnet
- small ball
- bead
- track
- momentum conservation
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Abstract
An experimental device for testing and verifying momentum conservation in a small ball collision process is mainly used in experimental teaching of universities, technical secondary schools and senior high schools. The experimental device for testing and verifying the momentum conservation in the small ball collision process comprises an electromagnet 1, a small ball 1, an electromagnet 2, a small ball 2, a photoelectric door, an electromagnet and photoelectric door control counter and a track, wherein the electromagnet 1 and the electromagnet 2 are mounted at different high positions of an oblique portion of the track, the electromagnet 1 absorbs the small ball 1, and the electromagnet 2 absorbs the small ball 2. The photoelectric door is mounted on a horizontal portion of the track. The electromagnet and photoelectric door control counter controls the power-on and power-off time and the power-on and power-off sequence of the electromagnet 1 and the electromagnet 2 and the shading time of the photoelectric door. The mass of the small ball 1 and the mass of the small ball 2 are measured, the horizontal displacement of the flat parabolic motion of the small ball 1 after the small ball 1 separately rolls out of the horizontal portion of the track is measured, the horizontal displacement of the flat parabolic motion of the small ball 2 after the small ball 2 separately rolls out of the horizontal portion of the track is measured, then the horizontal displacement of the flat parabolic motion of the small ball 1 and the horizontal displacement of the flat parabolic motion of the small ball 2 after the small ball 1 and the small ball 2 collide on the horizontal portion of the track are measured, and then the momentum conservation can be tested and rectified. Meanwhile, a user can also use the photoelectric door to record the shading time of the photoelectric door when the small balls pass through the photoelectric door every time, the speed of each small ball can be calculated by dividing the diameter of the small ball by the corresponding shading time, and therefore the momentum conservation law can be tested and rectified.
Description
Technical field
The utility model relates to a kind of checking bead striking momentum conservation experimental provision, is mainly used in large, special secondary school universities and colleges and physics experiments of high school teaching.
Background technology
At present, the checking momentum conservation experimental apparatus that adopts of senior middle school is to utilize the bead that rolls down from oblique rail to remove to collide the bead that is still on the horizontal rail to verify the law of conservation of momentum.It can only be that the bead that moves removes to collide static bead that the experimental apparatus of senior middle school defines.And actual collision process should be considered the situation that two beads all move.In universities, what verify law of conservation of momentum general using is air track and photoelectricity door.This experimental provision price of universities, air track and air compressor damage easily, need frequent M R.
Summary of the invention
In order to overcome senior middle school's checking momentum conservation experimental apparatus, the limitation of checking, be unlikely to again so that experimental apparatus is too complicated, high cost, the utility model provides a kind of checking bead striking momentum conservation experimental provision, this checking bead striking momentum conservation experimental provision can not only accurately be verified the law of conservation of momentum, and simple, convenient.
The utility model comprises electromagnet 1, bead 1, electromagnet 2, bead 2, photoelectricity door, electromagnet and photoelectricity gate control counter, track.Electromagnet 1 is installed in the different height and position in track inclination position with electromagnet 2.Electromagnet 1 and electromagnet 2 hold respectively bead 1 and bead 2.Photoelectricity door attachment rail horizontal position.The time of electromagnet and photoelectricity gate control counter controls electromagnet 1 and electromagnet 2 power on/off and order and photoelectricity door shading time.Measure the quality m of bead 1 and bead 2
1And m
2Measure bead 1 and bead 2 and roll separately the horizontal shift s that does level throw motion behind the horizontal position that leaves the right or normal track
1And s
2, measure again bead 1 and bead 2 are done level throw motion after the collision of track cross level position horizontal shift s
1 'And s
2 ', only need to calculate
Equation is set up, and can verify momentum conservation.
The utility model also can utilize photoelectricity door record bead at every turn by the shading time of photoelectricity door, utilizes the small ball's diameter to calculate bead speed divided by the shading time, and then the checking law of conservation of momentum.The diameter of measuring bead 1 and bead 2 is respectively d
1And d
2After measuring bead 1 and bead 2 and being rolled to separately the track cross level position, at the shading time t of horizontal rail by the photoelectricity door
1And t
2Measure bead 1 and bead 2 releases, two balls are rolled to the track cross level position together again, and after horizontal rail bumped, two balls were by the shading time t of photoelectricity door
1And t
2If calculate
Equation is set up, and also can verify momentum conservation.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is structural representation of the present utility model.
1. electromagnet 1 among the figure, 2. bead 1, and 3. electromagnet 2, and 4. bead 2,5. electromagnet and photoelectricity gate control counter, 6. photoelectricity door, 7. track.
Embodiment
First kind of way: electromagnet and photoelectricity gate control counter (5) control electromagnet 1(1) and electromagnet 2(3) time and the order of power on/off.Measure bead 1(2) and bead 2(4) quality m
1And m
2Measure bead 1 and bead 2 and roll separately the horizontal shift s that does level throw motion behind (7) horizontal position that leaves the right or normal track
1And s
2, measure again bead 1 and bead 2 are done level throw motion after the collision of track (7) horizontal position horizontal shift s
1 'And s
2 'Only need to calculate
Equation is set up, and can verify momentum conservation.
The second way: electromagnet and photoelectricity gate control counter (5) control electromagnet 1(1) and electromagnet 2(3) time and the order of power on/off.The shading time of utilizing electromagnet and photoelectricity gate control counter (5) record bead at every turn to pass through photoelectricity door (6).The diameter of measuring bead 1 and bead 2 is respectively d
1And d
2After measuring independent release bead 1 and bead 2 and being rolled to the track cross level position, at the shading time t of horizontal rail by the photoelectricity door
1And t
2Measure bead 1 and bead 2 releases, two balls are rolled to the track cross level position again, and after horizontal rail bumped, two balls were by the shading time t of photoelectricity door
1And t
2If calculate
Equation is set up, and also can verify momentum conservation.
Claims (3)
1. verify bead striking momentum conservation experimental provision for one kind, it comprises electromagnet 1, bead 1, electromagnet 2, bead 2, photoelectricity door, electromagnet and photoelectricity gate control counter, track.
2. checking bead striking momentum conservation experimental provision according to claim 1, it is characterized in that: electromagnet 1 is installed in the different height and position in track inclination position with electromagnet 2; Electromagnet 1 and electromagnet 2 hold respectively bead 1 and bead 2; Photoelectricity door attachment rail horizontal position; The time of electromagnet and photoelectricity gate control counter controls electromagnet 1 and electromagnet 2 power on/off and order and photoelectricity door shading time.
3. checking bead striking momentum conservation experimental provision according to claim 1 is characterized in that: the shading time of utilizing photoelectricity door record bead at every turn to pass through the photoelectricity door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514024 CN202838756U (en) | 2012-10-09 | 2012-10-09 | Experimental device for testing and verifying momentum conservation in small ball collision process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514024 CN202838756U (en) | 2012-10-09 | 2012-10-09 | Experimental device for testing and verifying momentum conservation in small ball collision process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202838756U true CN202838756U (en) | 2013-03-27 |
Family
ID=47950404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220514024 Expired - Fee Related CN202838756U (en) | 2012-10-09 | 2012-10-09 | Experimental device for testing and verifying momentum conservation in small ball collision process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202838756U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103544868A (en) * | 2013-07-27 | 2014-01-29 | 苍南县利新科教仪器有限公司 | Horizontal-casting sectional demonstration experimental device and experimental method thereof |
| CN104167128A (en) * | 2014-07-17 | 2014-11-26 | 浙江工业大学 | Momentum theorem teaching aid for theoretical mechanics |
| CN104575183A (en) * | 2014-12-18 | 2015-04-29 | 王辉 | Experimental device validating momentum conservation law |
| CN107862948A (en) * | 2018-01-09 | 2018-03-30 | 李新源 | A kind of checking device of the conservation of momentum |
| CN109410713A (en) * | 2018-11-22 | 2019-03-01 | 马浩然 | A kind of high school physics that experimental precision is high conservation of momentum experimental provision |
-
2012
- 2012-10-09 CN CN 201220514024 patent/CN202838756U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103544868A (en) * | 2013-07-27 | 2014-01-29 | 苍南县利新科教仪器有限公司 | Horizontal-casting sectional demonstration experimental device and experimental method thereof |
| CN104167128A (en) * | 2014-07-17 | 2014-11-26 | 浙江工业大学 | Momentum theorem teaching aid for theoretical mechanics |
| CN104575183A (en) * | 2014-12-18 | 2015-04-29 | 王辉 | Experimental device validating momentum conservation law |
| CN107862948A (en) * | 2018-01-09 | 2018-03-30 | 李新源 | A kind of checking device of the conservation of momentum |
| CN109410713A (en) * | 2018-11-22 | 2019-03-01 | 马浩然 | A kind of high school physics that experimental precision is high conservation of momentum experimental provision |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20131009 |