CN203931276U - A kind of plane momentum conservation demonstrating device - Google Patents
A kind of plane momentum conservation demonstrating device Download PDFInfo
- Publication number
- CN203931276U CN203931276U CN201420373348.0U CN201420373348U CN203931276U CN 203931276 U CN203931276 U CN 203931276U CN 201420373348 U CN201420373348 U CN 201420373348U CN 203931276 U CN203931276 U CN 203931276U
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- China
- Prior art keywords
- horizontal rail
- light
- weight metal
- metal ball
- ball
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Abstract
The utility model relates to a kind of experimental demonstration device, especially a kind of plane momentum conservation demonstrating device, a kind of plane momentum conservation demonstrating device, comprise a semi-circular track and horizontal rail, described semi-circular track lower end connects a side end of a horizontal rail, one incident ball is set in semi-circular track upper end, setting-in one optoelectronic switch in the shrinkage pool of making in the end side of described horizontal rail, the outstanding electromagnet that fills of this horizontal rail end side side, a light-weight metal ball is adsorbed in this electromagnet bottom, this light-weight metal ball and the contraposition of described horizontal rail phase, described optoelectronic switch connects described electromagnet by a relay.In the utility model, in horizontal rail, the optoelectronic switch of setting-in connects described relay, the closure of electromagnet described in this Control, thereby while ensureing to bump with described incident ball in the process that drops of control light-weight metal ball, this light-weight metal ball gravitate, reduces friction more effectively in the observation of experiment and the checking of result.
Description
Technical field
The utility model relates to a kind of experimental demonstration device, especially a kind of plane momentum conservation demonstrating device.
Background technology
In Physical Experiment, especially, in law of conservation of momentum experiment, due to inevitable friction force and air resistance, cause experimental data to certainly exist certain error, therefore reducing friction is that error amount is controlled to 5 percent with interior main settling mode.Existing fiber communication experiment demonstration instrument structure comprises a semi-circular track, this semi-circular track upper end arranges an incident ball, described semi-circular track lower end connects a side end of a horizontal rail, on the position of the extended line interval one incident bulb diameter of this horizontal rail end side, an articulation block is installed, this articulation block upper end arranges a light-weight metal ball, and the minimum point of described light-weight metal ball is positioned on the extended line of described horizontal rail lowest part.When incident ball goes out when clashing into light-weight metal ball after horizontal rail, because driving articulation block, inertia light-weight metal club deflects, between articulation block and hinge, there is sliding friction, will affect greatly experimental result.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of rational in infrastructure, reduce unnecessary friction, the plane momentum conservation demonstrating device that error is less.
The utility model is achieved through the following technical solutions:
A kind of plane momentum conservation demonstrating device, comprise a semi-circular track and horizontal rail, described semi-circular track lower end connects a side end of a horizontal rail, one incident ball is set in semi-circular track upper end, it is characterized in that: setting-in one optoelectronic switch in the shrinkage pool of making in the end side of described horizontal rail, the outstanding electromagnet that fills of this horizontal rail end side side, a light-weight metal ball is adsorbed in this electromagnet bottom, this light-weight metal ball and the contraposition of described horizontal rail phase, described optoelectronic switch connects described electromagnet by a relay.
And, when described incident ball flies out horizontal rail end side and light-weight metal ball central collision.
And, described light-weight metal ball is identical with the diameter of incident ball, this light-weight metal ball the most close horizontal rail place and horizontal rail homonymy end distance are the diameter of a light-weight metal ball, and the minimum point of described light-weight metal ball is positioned on the extended line of described horizontal rail lowest part.
And the quality of described light-weight metal ball is less than incident ball.
Advantage of the present utility model and good effect are:
In the utility model, in horizontal rail, the optoelectronic switch of setting-in connects described relay, the closure of electromagnet described in this Control, thereby while ensureing to bump with described incident ball in the process that drops of control light-weight metal ball, this light-weight metal ball gravitate; The installation site of described light-weight metal ball is corresponding with the end face of horizontal rail, thereby ensures that the collision occurring with incident ball is central collision; Thereby described light-weight metal ball quality is slightly less than the incident ball observation experiment result of being more convenient for.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below by embodiment, the utility model is elaborated, described embodiment is illustrative, and nonrestrictive, can not limit protection domain of the present utility model with this.
The course of work of the present utility model is:
A kind of plane momentum conservation demonstrating device, comprise a semi-circular track 2 and horizontal rail 8, described semi-circular track lower end connects a side end of a horizontal rail, one incident ball 1 is set in semi-circular track upper end, the utility model is characterised in that, interior setting-in one optoelectronic switch 7 of shrinkage pool 6 of making in the end side of described horizontal rail, this horizontal rail end side side is by the outstanding electromagnet 4 that fills of a fixed mount, a light-weight metal ball 5 is adsorbed in this electromagnet bottom, this light-weight metal ball and the contraposition of described horizontal rail phase, described optoelectronic switch connects described electromagnet by a relay 3.
In the present embodiment, when described incident ball flies out horizontal rail end side and light-weight metal ball central collision.Preferred scheme is: described light-weight metal ball is identical with the diameter of incident ball, this light-weight metal ball the most close horizontal rail place and horizontal rail homonymy end distance are the diameter of a light-weight metal ball, and the minimum point of described light-weight metal ball is positioned on the extended line of described horizontal rail lowest part.The quality of described light-weight metal ball is less than incident ball.
When the utility model uses, relay coil obtains electric, electromagnet obtains and electric light-weight metal ball is adsorbed, start after test, incident ball rolls along semi-circular track and horizontal rail, during through described optoelectronic switch, this optoelectronic switch is exported a switching value, make relay coil dead electricity, and make electromagnet power-off, now light-weight metal ball goes to freely falling body owing to losing absorption affinity, in the time that also not falling, it just bumps with incident ball, the center of gravity of incident ball and light-weight metal ball is positioned at same level position and central collision occurs, after described light-weight metal ball and incident dip of ball, measure respectively the position of described two balls, and independent measurement only has incident ball to do the position of level throw motion, according to the formula checking law of conservation of momentum.
Claims (4)
1. a plane momentum conservation demonstrating device, comprise a semi-circular track and horizontal rail, described semi-circular track lower end connects a side end of a horizontal rail, one incident ball is set in semi-circular track upper end, it is characterized in that: setting-in one optoelectronic switch in the shrinkage pool of making in the end side of described horizontal rail, the outstanding electromagnet that fills of this horizontal rail end side side, a light-weight metal ball is adsorbed in this electromagnet bottom, this light-weight metal ball and the contraposition of described horizontal rail phase, described optoelectronic switch connects described electromagnet by a relay.
2. a kind of plane momentum conservation demonstrating device according to claim 1, is characterized in that: when described incident ball flies out horizontal rail end side and light-weight metal ball central collision.
3. a kind of plane momentum conservation demonstrating device according to claim 2, it is characterized in that: described light-weight metal ball is identical with the diameter of incident ball, this light-weight metal ball the most close horizontal rail place and horizontal rail homonymy end distance are the diameter of a light-weight metal ball, and the minimum point of described light-weight metal ball is positioned on the extended line of described horizontal rail lowest part.
4. a kind of plane momentum conservation demonstrating device according to claim 3, is characterized in that: the quality of described light-weight metal ball is less than incident ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373348.0U CN203931276U (en) | 2014-07-08 | 2014-07-08 | A kind of plane momentum conservation demonstrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420373348.0U CN203931276U (en) | 2014-07-08 | 2014-07-08 | A kind of plane momentum conservation demonstrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931276U true CN203931276U (en) | 2014-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420373348.0U Expired - Fee Related CN203931276U (en) | 2014-07-08 | 2014-07-08 | A kind of plane momentum conservation demonstrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931276U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-07-08 CN CN201420373348.0U patent/CN203931276U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150708 |
|
| EXPY | Termination of patent right or utility model |