CN201955966U - Demonstrator for law of conservation of momentum - Google Patents
Demonstrator for law of conservation of momentum Download PDFInfo
- Publication number
- CN201955966U CN201955966U CN2011200306396U CN201120030639U CN201955966U CN 201955966 U CN201955966 U CN 201955966U CN 2011200306396 U CN2011200306396 U CN 2011200306396U CN 201120030639 U CN201120030639 U CN 201120030639U CN 201955966 U CN201955966 U CN 201955966U
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- momentum
- law
- conservation
- demonstrator
- fork
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Abstract
The utility model belongs to a teaching apparatus, and particularly relates to a demonstrator for the law of conservation of momentum. The demonstrator comprises a bottom plate (1). A sliding plate (2) is arranged on the bottom plate (1). Rollers (3) are arranged at the bottom of the sliding plate (2). A bracket (4) is arranged on the sliding plate (2). An oscillating bar (5) is arranged on the bracket (4). One end of the oscillating bar (5) is connected with the bracket (4), and the other end of the oscillating bar (5) is provided with a cradle (7). A heavy object (8) is arranged in the cradle (7). The demonstrator can help students understand the law of conversation of momentum.
Description
Technical field
The utility model belongs to instruments used for education, particularly a kind of law of conservation of momentum demonstrator.
Background technology
The impart knowledge to students scheme implementation of new curriculum reform of senior middle school, the theory of core is to be this with student.More and more pay attention to improving students'interest in learning for physics teaching, strengthen communication and cooperate.Suitable carry out open teaching, help the further intensification of student couple and knowledge understanding.The law of conservation of momentum is difficult knowledge point of high school physics, and in order to allow the high school student understand the law of conservation of momentum better, exploitation law of conservation of momentum demonstrator has the comparison realistic meanings.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of law of conservation of momentum demonstrator is provided, and this demonstrator can help the student to understand the law of conservation of momentum.
To achieve these goals, the technical solution of the utility model is as follows: a kind of law of conservation of momentum demonstrator, it comprises base plate, slide plate is set on the base plate, and the slide plate bottom is provided with roller, and support is set on the slide plate, fork is set on the support, one end of fork is connected with support, and the other end of fork is provided with Hanging Basket, and weight is set in the Hanging Basket.
The law of conservation of momentum is one of occurring in nature the most general most important law of conservation.If system is not subjected to the vector of external force or suffered external force and be zero, the aggregate momentum of this system remains unchanged so, and this conclusion is called the law of conservation of momentum.The slide plate bottom is provided with roller roller is set, and makes the suffered external force of total system less, meets the condition of the law of conservation of momentum substantially.During demonstration, with static release after the Hanging Basket pull-up of weight is housed, can see near a slide plate to-and-fro movement position always, but the direction of motion of upper slide and Hanging Basket is always opposite in the horizontal direction, when Hanging Basket peaked, the speed of Hanging Basket and slide plate was zero simultaneously.
As further technical scheme, an end of described fork is connected with support by bearing.
One end of described fork is connected with support by bearing, has further reduced the influence of external force.
As further technical scheme, described weight is an iron ball.
As further technical scheme, the quantity of described weight is 3.
The quantity of weight is arranged to 3, can changes the motion state of Hanging Basket and slide plate by the quantity that increases or reduce weight.
As further technical scheme, the material of described base plate is a glass.
The material of described base plate is a glass, has further reduced the influence of external force, makes experiment effect more obvious.
The utility model is simple in structure, operates easyly, and effect is obvious, can help the student to understand the law of conservation of momentum intuitively, has enriched the content of courses and teaching means.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of law of conservation of momentum demonstrator comprises base plate 1, and the material of base plate 1 is a glass.Slide plate 2 is set on the base plate 1, and slide plate 2 bottoms are provided with roller 3, and support 4 is set on the slide plate 2, fork 5 is set on the support 4, and an end of fork 5 is connected with support 4 by bearing 6, and the other end of fork 5 is provided with Hanging Basket 7, weight 8 is set in the Hanging Basket 7, and weight 8 is an iron ball, and quantity is 3.
Claims (5)
1. law of conservation of momentum demonstrator, it is characterized in that: it comprises base plate (1), slide plate (2) is set on the base plate (1), slide plate (2) bottom is provided with roller (3), support (4) is set on the slide plate (2), fork (5) is set on the support (4), an end of fork (5) is connected with support (4), the other end of fork (5) is provided with Hanging Basket (7), and weight (8) is set in the Hanging Basket (7).
2. a kind of law of conservation of momentum demonstrator as claimed in claim 1 is characterized in that: an end of described fork (5) is connected with support (4) by bearing (6).
3. a kind of law of conservation of momentum demonstrator as claimed in claim 1 or 2 is characterized in that: described weight (8) is an iron ball.
4. a kind of law of conservation of momentum demonstrator as claimed in claim 3 is characterized in that: the quantity of described weight (8) is 3.
5. a kind of law of conservation of momentum demonstrator as claimed in claim 1 or 2 is characterized in that: the material of described base plate (1) is a glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200306396U CN201955966U (en) | 2011-01-28 | 2011-01-28 | Demonstrator for law of conservation of momentum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200306396U CN201955966U (en) | 2011-01-28 | 2011-01-28 | Demonstrator for law of conservation of momentum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201955966U true CN201955966U (en) | 2011-08-31 |
Family
ID=44500070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200306396U Expired - Fee Related CN201955966U (en) | 2011-01-28 | 2011-01-28 | Demonstrator for law of conservation of momentum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201955966U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104504965A (en) * | 2015-01-05 | 2015-04-08 | 曹小玲 | Method of verifying momentum theorem in action of variable forces |
| CN104575183A (en) * | 2014-12-18 | 2015-04-29 | 王辉 | Experimental device validating momentum conservation law |
-
2011
- 2011-01-28 CN CN2011200306396U patent/CN201955966U/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 |
| CN104504965A (en) * | 2015-01-05 | 2015-04-08 | 曹小玲 | Method of verifying momentum theorem in action of variable forces |
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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: 20110831 Termination date: 20120128 |