CN203397564U - Momentum multiplication demonstrating instrument - Google Patents
Momentum multiplication demonstrating instrument Download PDFInfo
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- CN203397564U CN203397564U CN201320556903.9U CN201320556903U CN203397564U CN 203397564 U CN203397564 U CN 203397564U CN 201320556903 U CN201320556903 U CN 201320556903U CN 203397564 U CN203397564 U CN 203397564U
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- momentum
- rolling groove
- multiplication
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- steel ball
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Abstract
The utility model provides a momentum multiplication demonstrating instrument in order to solve a problem that momentum increase caused by external forces applied on an object cannot be demonstrated since a prior momentum multiplication demonstrating instrument for middle and primary school physics teaching only can display momentum conservation generally. The momentum multiplication demonstrating instrument includes a pedestal and a linear bottom board arranged on the pedestal. A linear rolling groove is arranged in the bottom board. Two ends of the bottom board are provided with a support each. The support is provided with an arc-shaped rolling groove extending upward vertically. The arc-shaped rolling groove is connected with the linear rolling groove. A plurality of baffles are arranged on the linear rolling groove. The baffles are inside provided with permanent magnets. Demonstration steel balls are arranged in the linear rolling groove and the arc-shaped rolling grooves. According to the utility model, collision of the steel balls occurs in the rolling grooves, so that momentum is transmitted. Momentum increase of the demonstration steel balls is demonstrated under the action of magnetic field forces. Successive acceleration and momentum exchange of the steel balls in a magnetic field are demonstrated, so that demonstration of momentum multiplication is realized perfectly. Therefore, the proceeding of physics teaching demonstration can be facilitated.
Description
Technical field
The utility model relates to teaching aid technical field, specifically, relates to a kind of momentum multiplication demonstrator.
Background technology
Momentum representation is the product of quality and the speed of object, is and the quality of object and the physical quantity of velocity correlation, refers to the trend that this object keeps motion in its direction of motion.Momentum is also vector, and its direction is identical with the direction of speed.If it is zero that a system is not subject to the vector of external force or suffered external force in motion process, the aggregate momentum of this system remains unchanged so, and this conclusion is called the law of conservation of momentum.But object is under the effect that is subject to external force, the momentum of object will increase.
The momentum demonstrator of existing middle and primary schools physics teaching generally can only show momentum conservation, is subject to the effect of external force for object, and momentum increase cannot be demonstrated, and has greatly hindered the demonstration effect of teaching.
Utility model content
The utility model generally can only show momentum conservation in order to solve the momentum demonstrator of existing middle and primary schools physics teaching, is subject to the effect of external force for object, and the problem that momentum increase cannot be demonstrated provides a kind of momentum multiplication demonstrator.
The technical matters of the required solution of the utility model, can be achieved through the following technical solutions:
A kind of momentum multiplication demonstrator, it is characterized in that, comprise: base, be arranged on the base plate of linearity on base, described base plate is provided with straight-line rolling groove, the two ends of described base plate are respectively equipped with the first support and the second support, described the first support and the second support are provided with the arc rolling groove extending straight up, described arc rolling groove is connected with straight-line rolling groove, on described straight-line rolling groove, be interval with a plurality of baffle plates, in described baffle plate, be provided with permanent magnet, in straight-line rolling groove and arc rolling groove, be provided with demonstration steel ball.
In the utility model, described baffle plate is provided with through hole, and described permanent magnet is inlaid in described through hole; The stability of installing in order to strengthen permanent magnet, is provided with reinforcing ring between described through hole and permanent magnet.
In the utility model, described baffle plate is 3, avoids on the one hand that very few to cause steel ball by permanent magnet, to increase continuously the demonstration of momentum in rolling groove not obvious, avoids on the other hand too much degree of transitivity to cause energy loss large and make display effect not obvious.
In the utility model, described 3 baffle plates are followed successively by the first baffle plate from the first support one side to the second support one side, second baffle and the 3rd baffle plate, described demonstration steel ball comprises, the demonstration starting stage is positioned at first steel ball on the first support arc rolling groove top, on straight-line rolling groove between the first baffle plate and second baffle, the second steel ball and the 3rd steel ball of being close to successively the first baffle plate, on straight-line rolling groove between second baffle and the 3rd baffle plate, the 4th steel ball and the 5th steel ball of being close to successively second baffle, on straight-line rolling groove between the 3rd baffle plate and the second support, the 6th steel ball and the 7th steel ball of being close to successively the 3rd baffle plate.
In the utility model, described baffle plate spaced set, further to strengthen display effect.
In the utility model, the upper end height of described the second support arc rolling groove is higher than the height of the first support arc rolling groove upper end, to strengthen demonstration effect.
In the utility model, described the first support is provided with fixed side with the outside of the relative straight-line rolling groove of the second support, to strengthen the intensity of support.
In the utility model, described straight-line rolling groove is provided with mounting groove, and described baffle plate is inlaid in mounting groove, so that baffle plate is installed.
In the utility model, described base is box-like, comprises base upper cover and base lower cover, and described base upper cover buckles under base and covers.
Momentum multiplication demonstrator of the present utility model, demonstration steel ball bumps in rolling groove, by the momentum transfer of self, give next demonstration small ball, while is due to the effect of magnetic field force, demonstration steel ball has also been realized momentum increase, and demonstration steel ball in succession accelerates in magnetic field, momentum-exchange, finally obtains a very large momentum and flies out, ideally realize the demonstration of momentum multiplication, can be conducive to the carrying out of physics teaching demonstration.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model baffle plate.
Embodiment
In order to make technological means of the present utility model, creation characteristic, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Purport of the present utility model is, by in existing middle and primary schools Physics Learning process, the analysis of momentum demonstration demand, the momentum demonstrator of finding existing middle and primary schools physics teaching generally can only show momentum conservation, for object, be subject to the effect of external force, the problem that momentum increase cannot be demonstrated, provides a kind of momentum multiplication demonstrator to address the above problem by the utility model.
Referring to Fig. 1, momentum multiplication demonstrator of the present utility model, comprise base, other assemblies of whole momentum multiplication demonstrator are installed on base, in the utility model, adopted a kind of preferably mode, base comprises base lower cover 11 and base upper cover 12, and it is box-like that base is, base upper cover 12 buckles on base lower cover 11, can be used for taking in each assembly of momentum multiplication demonstrator in base lower cover 11.
In present embodiment, base upper cover 12 is provided with the base plate 2 of linearity, base plate 2 is provided with straight-line rolling groove (invisible in Fig. 1), the two ends of base plate 2 are respectively equipped with the first support 3 and the second support 4, the first support 3 and the second support 4 are equipped with the arc rolling groove (invisible in Fig. 1) extending straight up, arc rolling groove is connected with the straight-line rolling groove on base plate 2, in order to strengthen the intensity of support, the first support 3 can also arrange fixed side (not illustrated) with the outside of the relative straight-line rolling groove of the second support 4, in addition, straight-line rolling Cao Shang interval is provided with 3 baffle plates, here, 3 baffle plates are followed successively by the first baffle plate 51 from the first support 3 one sides to the second support 4 one sides, second baffle 52 and the 3rd baffle plate 53.
Referring to Fig. 2, first baffle plate 51 of take is example, which is provided with through hole 511, the interior setting-in permanent magnet 6 of through hole 511, on straight-line rolling groove, formed magnetic field like this, the stability of installing in order to strengthen permanent magnet 6, can also arrange reinforcing ring (in being arranged on, not signal) between through hole 511 and permanent magnet 6.For the ease of baffle plate is installed, in present embodiment, on straight-line rolling groove, be provided with mounting groove 21, baffle plate is inlaid in mounting groove 21, makes the installation of baffle plate also comparatively convenient.
Again referring to Fig. 1, in straight-line rolling groove and arc rolling groove, be provided with demonstration steel ball, demonstration steel ball comprises, the demonstration starting stage is positioned at first steel ball 71 on the first support 3 arc rolling groove tops, on straight-line rolling groove between the first baffle plate 51 and second baffle 52, the second steel ball 72 and the 3rd steel ball 73 of being close to successively the first baffle plate 51, on straight-line rolling groove, second keeps off between 52 plates and the 3rd baffle plate 53, the 4th steel ball 74 and the 5th steel ball 75 of being close to successively second baffle 52, on straight-line rolling groove between the 3rd baffle plate 53 and the second support 4, the 6th steel ball 76 and the 7th steel ball 77 of being close to successively the 3rd baffle plate 53.
The principle of work of momentum multiplication demonstrator of the present utility model is as follows: the demonstration starting stage is placed on the first support 3 arc rolling groove tops by the first steel ball 71, decontrol after the first steel ball 71, the first steel ball 71 rolls downwards along the first support 3 arc rolling grooves under the effect of self gravitation, after the first steel ball 71 collides the first baffle plate 51, its momentum is delivered to the second steel ball 72 by the first baffle plate 51, the second steel ball 72 and then give the 3rd steel ball 73 by momentum transfer, owing to having magnetic field in straight-line rolling groove, the 3rd steel ball 73 is in the process to the second support 4 one side rolls, momentum can increase, the 3rd steel ball 73 collides after second baffle 52, and its momentum is being delivered to the 4th steel ball 74 and the 5th steel ball 75, the five steel balls 75 successively under the effect in the process Zhong， magnetic field of the second support 4 one side rolls by second baffle 52, and momentum can increase again, the 5th steel ball 75 and then collide the 3rd baffle plate 53, by the 3rd baffle plate 53 by its momentum transfer to the six steel balls 76 and the 7th steel ball 77, effect due to magnetic field, momentum when ratio of momentum first steel ball 71 of the 7th steel ball 77 collides the first baffle plate 51 is large a lot, and the 7th steel ball 77 can fly out from the upper end of the second support 4 arc rolling grooves.
Therefore, in order to make display effect more obvious, the upper end height of the second support 4 arc rolling grooves is preferably the height higher than the first support 3 arc rolling groove upper ends, can very clearly show that demonstration steel ball momentum under the effect in magnetic field increases, the 7th steel ball 77 is from flying out than the first steel ball 71Geng Gao position.Certainly, in order further to strengthen display effect, make in presentation process, the momentum increase of the steel ball of collision demonstration is each time more even, and 3 baffle plates are preferably spaced set.
Certainly, the quantity that it is pointed out that baffle plate not must 3, and minimum 2 baffle plates also can be realized the purpose of this utility model, the demonstration of realization to momentum multiplication, but baffle plate crosses that I haven't seen you for ages and cause steel ball, in rolling groove, by permanent magnet, to increase continuously the demonstration of momentum not obvious; Certainly the quantity of baffle plate is also difficult for too much, too much makes the degree of transitivity of momentum increase, and causes energy loss to make display effect not obvious greatly.3 baffle plates are a kind of preferably embodiments, and are not limitation of the utility model.
Momentum multiplication demonstrator of the present utility model, demonstration steel ball bumps in rolling groove, by the momentum transfer of self, give next demonstration small ball, while is due to the effect of magnetic field force, show that steel ball also realized momentum increase, demonstration steel ball in succession accelerates in magnetic field, momentum-exchange, finally obtains a very large momentum and flies out, ideally realize the demonstration of momentum multiplication, can be conducive to the carrying out of physics teaching demonstration.
Below only with regard to the utility model preferred embodiment, be described, but can not be interpreted as it is limitations on claims.The utility model is not only confined to above embodiment, and its concrete structure allows to change.In a word, all various variations of doing in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (10)
1. momentum multiplication demonstrator, it is characterized in that, comprise: base, be arranged on the base plate of linearity on base, described base plate is provided with straight-line rolling groove, the two ends of described base plate are respectively equipped with the first support and the second support, described the first support and the second support are provided with the arc rolling groove extending straight up, described arc rolling groove is connected with straight-line rolling groove, on described straight-line rolling groove, be interval with a plurality of baffle plates, in described baffle plate, be provided with permanent magnet, in straight-line rolling groove and arc rolling groove, be provided with demonstration steel ball.
2. momentum multiplication demonstrator according to claim 1, is characterized in that: described baffle plate is provided with through hole, and described permanent magnet is inlaid in described through hole.
3. momentum multiplication demonstrator according to claim 2, is characterized in that: between described through hole and permanent magnet, be provided with reinforcing ring.
4. according to the arbitrary described momentum multiplication of claims 1 to 3 demonstrator, it is characterized in that: described baffle plate is 3.
5. momentum according to claim 4 multiplication demonstrator, it is characterized in that: described 3 baffle plates are followed successively by the first baffle plate from the first support one side to the second support one side, second baffle and the 3rd baffle plate, described demonstration steel ball comprises, the demonstration starting stage is positioned at first steel ball on the first support arc rolling groove top, on straight-line rolling groove between the first baffle plate and second baffle, the second steel ball and the 3rd steel ball of being close to successively the first baffle plate, on straight-line rolling groove between second baffle and the 3rd baffle plate, the 4th steel ball and the 5th steel ball of being close to successively second baffle, on straight-line rolling groove between the 3rd baffle plate and the second support, the 6th steel ball and the 7th steel ball of being close to successively the 3rd baffle plate.
6. momentum multiplication demonstrator according to claim 4, is characterized in that: described baffle plate spaced set.
7. momentum multiplication demonstrator according to claim 5, is characterized in that: the upper end height of described the second support arc rolling groove is higher than the height of the first support arc rolling groove upper end.
8. momentum multiplication demonstrator according to claim 1, is characterized in that: described the first support is provided with fixed side with the outside of the relative straight-line rolling groove of the second support.
9. momentum multiplication demonstrator according to claim 1, is characterized in that: described straight-line rolling groove is provided with mounting groove, and described baffle plate is inlaid in mounting groove.
10. momentum multiplication demonstrator according to claim 1, is characterized in that: described base is box-like, and comprise base upper cover and base lower cover, described base upper cover buckles under base and covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556903.9U CN203397564U (en) | 2013-09-09 | 2013-09-09 | Momentum multiplication demonstrating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556903.9U CN203397564U (en) | 2013-09-09 | 2013-09-09 | Momentum multiplication demonstrating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203397564U true CN203397564U (en) | 2014-01-15 |
Family
ID=49909082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320556903.9U Expired - Fee Related CN203397564U (en) | 2013-09-09 | 2013-09-09 | Momentum multiplication demonstrating instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203397564U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL441088A1 (en) * | 2022-05-04 | 2023-11-06 | Uniwersytet Łódzki | Device for checking the principle of conservation of momentum and examining magnetic interactions |
-
2013
- 2013-09-09 CN CN201320556903.9U patent/CN203397564U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL441088A1 (en) * | 2022-05-04 | 2023-11-06 | Uniwersytet Łódzki | Device for checking the principle of conservation of momentum and examining magnetic interactions |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20160909 |