CN203300099U - Experiment apparatus for demonstration of the theorem of momentum - Google Patents
Experiment apparatus for demonstration of the theorem of momentum Download PDFInfo
- Publication number
- CN203300099U CN203300099U CN201320355715XU CN201320355715U CN203300099U CN 203300099 U CN203300099 U CN 203300099U CN 201320355715X U CN201320355715X U CN 201320355715XU CN 201320355715 U CN201320355715 U CN 201320355715U CN 203300099 U CN203300099 U CN 203300099U
- Authority
- CN
- China
- Prior art keywords
- impulse force
- theorem
- momentum
- demonstration
- stilt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses an experiment apparatus for demonstration of the theorem of momentum. The experiment apparatus comprises a pedestal, a support, an impact heavy object, a supporter and an impact force measure circuit. The support is fixedly arranged on the pedestal; the impact heavy object is hung on the support and can swing back and forth; and the impact force measure circuit is used for measuring and displaying the bearing force of the supporter when the impact heavy object impacts the supporter. According to the experiment apparatus for demonstration of the theorem of momentum, the structure is simple, material is easy to obtain, costs are low, operation is simple, effect is obvious, a student is helped to visually understand the theorem of momentum, and teaching content and means are abundant.
Description
Technical field
The utility model relates to a kind of educational aid, particularly a kind of experimental provision of probing into the demonstration theorem of momentum.
Background technology
" theorem of momentum " is very important key content in the physics mechanics, it is wider than the Newton's laws of motion application, yet also do not have manufacturer production to go out to probe into or demonstrate the experimental provision of theorem of momentum at present, in teaching process, teachers derive and draw theorem of momentum through theory.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of experimental provision of probing into the demonstration theorem of momentum.
The purpose of this utility model is achieved through the following technical solutions:
A kind of experimental provision of probing into the demonstration theorem of momentum, comprise base, support, collision weight, stilt and impulse force metering circuit, described support is fixed on base, described collision weight hangs on support and can do and swings back and forth, and described impulse force metering circuit is used for measuring and shows the stressed size of stilt when collision weight and stilt bump.
Further, described collision weight is ball or right cylinder or square body.
Further, described collision weight and stilt are coated with dismountable soft layer.
Further, described experimental provision also comprises the index dial that is fixed on support, and described index dial is used for showing that the collision weight departs from the angle of equilibrium position.
Further, described impulse force metering circuit comprises power supply, metallic resistance, impulse force meter, guide rail and sliding pin, described sliding pin is fixed on stilt, above support horizontally slips along smooth guide, above support, power supply, impulse force meter, metallic resistance, sliding pin are connected in series successively, and the collision weight changes the contact position of sliding pin and metallic resistance by the position that changes stilt with this.
Further, described impulse force metering circuit also comprises spring and the metal link stopper that connects successively, and described metal link stopper is fixed on base and with power supply and is connected, and described spring is connected with sliding pin.
Further, described impulse force metering circuit also comprises switch, and power supply is connected by switch with the impulse force meter.
Further, described impulse force metering circuit also comprises current-limiting resistance, and the impulse force meter connects by current-limiting resistance with switch.
The beneficial effects of the utility model are:
The utility model is simple in structure, draws materials easily, and with low cost, simple to operate, successful, can help the student to understand intuitively theorem of momentum, enriched the content of courses and teaching means.
Description of drawings
In order to make the purpose of this utility model, technical scheme and beneficial effect clearer, the utility model provides following accompanying drawing to describe:
Fig. 1 is utility model experimental provision structural drawing.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in the figure, a kind of experimental provision of probing into the demonstration theorem of momentum, comprise base 1, support 2, collision weight 4 stilts and impulse force metering circuit, described support 2 is fixed on base 1, described collision weight 4 hangs on support 2 and can do and swings back and forth, and described impulse force metering circuit is used for measuring and shows the stressed size of stilt when collision weight 4 bumps with stilt.
Described collision weight 4 is ball or cylinder or square body, and the dismountable soft layer of one deck can be wrapped up in collision weight surface.
Described impulse force meter also comprises the index dial 5 that is fixed on support 2, and described index dial 5 is used for showing that collision weight 4 departs from the angle of equilibrium position.
Described impulse force meter comprises power supply 12, metallic resistance 7, impulse force meter 3 and sliding pin 8, described sliding pin 8 is fixed on stilt 6, described power supply 12, impulse force meter 3, metallic resistance 7, sliding pin 8 and guide rail 14 are connected in series successively, sliding pin 8 is fixed on stilt 6, stilt 6 surfaces can be wrapped up the dismountable soft layer of one deck and can be done and horizontally slip on smooth guide, and the friction force between stilt and guide rail is very little, and collision weight 4 changes stilt 6 by shock position changes the contact position of sliding pin 8 and metallic resistance 7 with this.
As the improvement to the present embodiment, described impulse force metering circuit also comprises spring 9 and the metal link stopper 11 that connects successively, and described metal link stopper 11 is fixed on base 1 and with power supply 12 and is connected, and described spring 9 is connected with sliding pin 8.Spring 9 can make the automatic correcting action of stilt.
Described impulse force metering circuit respectively also comprises switch 13, and power supply 12 is connected by switch 13 with impulse force meter 3.
Described impulse force metering circuit also comprises current-limiting resistance 10, and impulse force meter 3 is connected with switch by current-limiting resistance 10 connections.
When stilt 6 was not subject to impulse force, impulse force meter 3 registrations were 0; When stilt 6 is subject to impulse force, just can read from impulse force meter 3 size of this impulse force.Power is larger, and spring 9 decrements are larger, and the resistance value in metallic resistance 7 places in circuit reduces, and it is large that the registration of impulse force meter 3 just becomes.So by the size that the impulse force meter shows, just know the size that stilt 6 is stressed.During experiment, after colliding weight 4 and pulling open equilibrium position, freely discharge, gravitional force is converted into kinetic energy and in equilibrium position and anti-stilt 6, bumps, the size of impulse force while by impulse force meter 3, demonstrating collision.
The use step of this experimental provision:
1). when speed is constant, the relation of impulse force size and mass of object size while probing into collision
Closing Switch 13, make collision weight 4 fall from sustained height (will collide weight and be pulled away from the identical angle in equilibrium position), guarantees that namely speed is certain.Be inserted in iron staff in the collision thing or extract to change the quality of colliding weight, with collision weight 4 and stilt 6, bumping against, from the reading of impulse force dynamometer, can draw, when speed was constant, the quality of colliding weight was larger, and during interaction, impulse force is just larger.
2). during mass conservation, the relation of impulse force size and object speed size while probing into collision
Closing Switch 13, guarantee collision weight mass conservation (do not insert iron staff or all insert iron staff), the collision weight fallen, the velocity magnitude while namely changing collision from differing heights (weight is pulled away from the different angle in equilibrium position).Stilt bumps against with the collision weight, and in the time of can drawing the mass conservation of object from the reading of impulse force dynamometer, speed is larger, and during interaction, impulse force is just larger.
3). quality, when speed is constant, the relation of impulse force size and action time while probing into collision
Closing Switch 13, guarantee collision weight mass conservation (do not insert iron staff or all insert iron staff), and the collision weight is fallen from equal height (will collide weight and be pulled away from the identical angle in equilibrium position), and the velocity magnitude while namely guaranteeing collision is identical.Bump (while colliding for the first time with stilt and collision weight, collision weight or stilt surface superscribe soft layer, while colliding for the second time, soft layer is not wrapped up on collision weight and stilt surface), can draw from the reading of impulse force meter, when the collision weight package wrapped soft layer, the interaction time was long, and impulse force is less; When the collision weight did not wrap up soft layer, the interaction time was short, and impulse force is larger.
Collision weight quality and speed all in constant situation, illustrate that the initial momentum before its collision is identical, and all vanishing of speed after collision, illustrate that its last momentum is identical, and collision front and back momentum change amount is identical.When with different surfaces, colliding action time different, the size of power is also different, the change amount that momentum be described is not that the size of Dan Youli determines, but by the size of power and action time common the decision, namely by the decision of momentum size.Quantitative relationship between the change amount of object momentum and suffered momentum size is just showed by theorem of momentum.
The utility model also can be only the compression degree of the sliding distance on rough guide rail or spring carrys out the size of antistress according to stilt.
Explanation is finally, above preferred embodiment is only unrestricted in order to the technical solution of the utility model to be described, although by above preferred embodiment, the utility model is described in detail, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from the utility model claims limited range.
Claims (8)
1. probe into the experimental provision of demonstrating theorem of momentum for one kind, it is characterized in that: comprise base, support, collision weight, stilt and impulse force metering circuit, described support is fixed on base, described collision weight hangs on support and can do and swings back and forth, and described impulse force metering circuit is used for measuring and shows the stressed size of stilt when collision weight and stilt bump.
According to claim 1 a kind of probe into the demonstration theorem of momentum experimental provision, it is characterized in that: described collision weight is ball or right cylinder or square body.
According to claim 1 a kind of probe into the demonstration theorem of momentum experimental provision, it is characterized in that: described collision weight and stilt are coated with dismountable soft layer.
4. a kind of experimental provision of probing into the demonstration theorem of momentum according to claim 1, it is characterized in that: described experimental provision also comprises the index dial that is fixed on support, described index dial be used for to show that the collision weight departs from the angle of equilibrium position.
According to claim 1 a kind of probe into the demonstration theorem of momentum experimental provision, it is characterized in that: described impulse force metering circuit comprises power supply, metallic resistance, impulse force meter, guide rail and sliding pin, described sliding pin is fixed on stilt, above support horizontally slips along smooth guide, above support, power supply, impulse force meter, metallic resistance, sliding pin are connected in series successively, and the collision weight changes the contact position of sliding pin and metallic resistance by the position that changes stilt with this.
According to claim 5 a kind of probe into the demonstration theorem of momentum experimental provision, it is characterized in that: described impulse force metering circuit also comprises spring and the metal link stopper that connects successively, described metal link stopper is fixed on base and with power supply and is connected, and described spring is connected with sliding pin.
According to claim 6 a kind of probe into the demonstration theorem of momentum experimental provision, it is characterized in that: described impulse force metering circuit also comprises switch, power supply is connected by switch with the impulse force meter.
According to claim 7 a kind of probe into the demonstration theorem of momentum experimental provision, it is characterized in that: described impulse force metering circuit also comprises current-limiting resistance, and the impulse force meter connects by current-limiting resistance with switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320355715XU CN203300099U (en) | 2013-06-20 | 2013-06-20 | Experiment apparatus for demonstration of the theorem of momentum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320355715XU CN203300099U (en) | 2013-06-20 | 2013-06-20 | Experiment apparatus for demonstration of the theorem of momentum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203300099U true CN203300099U (en) | 2013-11-20 |
Family
ID=49576095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320355715XU Withdrawn - After Issue CN203300099U (en) | 2013-06-20 | 2013-06-20 | Experiment apparatus for demonstration of the theorem of momentum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203300099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280142A (en) * | 2013-06-20 | 2013-09-04 | 西南大学 | Experimental apparatus for exploring and demonstrating momentum theorem |
-
2013
- 2013-06-20 CN CN201320355715XU patent/CN203300099U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280142A (en) * | 2013-06-20 | 2013-09-04 | 西南大学 | Experimental apparatus for exploring and demonstrating momentum theorem |
| CN103280142B (en) * | 2013-06-20 | 2015-02-11 | 西南大学 | Experimental apparatus for exploring and demonstrating momentum theorem |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206726589U (en) | A kind of elastic potential energy experimental provision for being easy to high school student to understand | |
| CN202677673U (en) | Experimental device for testing mechanical energy and momentum conservation | |
| CN103280142A (en) | Experimental apparatus for exploring and demonstrating momentum theorem | |
| CN203300099U (en) | Experiment apparatus for demonstration of the theorem of momentum | |
| CN203300097U (en) | Experiment apparatus for verification of Galileo's theorem and determination of gravitational acceleration | |
| CN207249966U (en) | A kind of demonstration apparatus for energy conversion | |
| CN105719538A (en) | Momentum conservation verification device based on magnetic powder display | |
| CN208819469U (en) | A kind of apparatus for demonstrating for experiment with falling objects | |
| CN108847093B (en) | Physical teaching is with oblique throwing motion experiment presentation device | |
| CN206497657U (en) | A kind of engineering mechanics collision test device | |
| CN201017500Y (en) | Mechanical energy conservation law verification device | |
| CN201549104U (en) | Circular motion demonstrating device | |
| CN205862661U (en) | A kind of energy converts teaching demonstration device | |
| CN205247723U (en) | Overweight weightless demonstration appearance | |
| CN202331997U (en) | Energy conservation demonstrator | |
| CN201955966U (en) | Demonstrator for law of conservation of momentum | |
| CN204166778U (en) | Vertical upthrow demonstrator | |
| CN202502656U (en) | Simple pendulum teaching aid | |
| CN202948626U (en) | Simple pendulum teaching demonstrator | |
| CN202996134U (en) | Novel simple pendulum demonstration instrument | |
| CN205230455U (en) | Novel middle school physics experiment demonstration device | |
| CN204303223U (en) | A kind of teaching aid of mechanics teaching | |
| CN206411962U (en) | A kind of high school physicses movement of falling object device | |
| CN203001846U (en) | Tennis racket with force measuring meter | |
| CN205562835U (en) | Acceleration of gravity detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131120 Effective date of abandoning: 20150211 |
|
| RGAV | Abandon patent right to avoid regrant |