CN202352185U - Device for demonstrating composition and decomposition of force - Google Patents
Device for demonstrating composition and decomposition of force Download PDFInfo
- Publication number
- CN202352185U CN202352185U CN2011204533609U CN201120453360U CN202352185U CN 202352185 U CN202352185 U CN 202352185U CN 2011204533609 U CN2011204533609 U CN 2011204533609U CN 201120453360 U CN201120453360 U CN 201120453360U CN 202352185 U CN202352185 U CN 202352185U
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- force
- decomposition
- chi
- demonstrating
- spring
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Abstract
The utility model designs a device for demonstrating the composition and the decomposition of force, belongs to the field of physics teaching, and provides a real and intuitionistic device for demonstrating the composition and the decomposition of the force, so that the device not only is good for teachers to explain, but also is good for students to obtain perceptual knowledge. The device comprises a bracket, a balance ring, a spring support rod, a force composing ruler, a force decomposing ruler, a spring, a rotating shaft, a soft steel wire, a spacing ring, a synchronous steel bar, a semi-circle track, a through hole and the like. The device can be used for demonstrating the composition and the decomposition of the force under various conditions: demonstrating the conditions that the composition force is more than, equal to or less than the decomposition force, and demonstrating the problem of complex mechanics that the composition force is invariable, the direction of one sub-decomposition force is invariable, and the direction of another sub-decomposition force is continuously variable, so that the students can obtain an intuitionistic and vivid cognitive effect.
Description
Technical field
The utility model relates to the synthetic of a kind of power and decomposes demonstration device, belongs to the physics teaching field.
Background technology
At present, in the existing physics teaching, teacher generally adopts the blackboard graphing method when the synthetic and decomposition of the power of lecturing, even one or two teaching aid arranged, but all be the simulation of power, lacks perceptual knowledge, and teaching efficiency is not good, is difficult to convincing.
Summary of the invention
The technical matters that the utility model will solve is: provide a kind of truly, intuitively power synthetic with decompose demonstration device, it had both helped teacher's explanation, helped the student again and produced perceptual knowledge, can also help the student to overcome the puzzlement on typical problem.
The utility model is realized as follows:
In order to solve the problems of the technologies described above, the utility model comprises compositions such as support, gimbal, spring supporting bar, the chi of making a concerted effort, component chi, spring, rotating shaft, stone dead wire, spacing ring, synchronous steel bar, semi-circular track, through hole.
Concrete connected mode: rotating shaft, semi-circular track are fixed on the support, and the spring supporting bar lower end is hinged in the rotating shaft, and semi-circular track is passed in the upper part of spring supporting bar can do circle swing; Three spring one ends are connected with gimbal respectively, and the other end has hook and is separately fixed on support and the support bar, and an end of stone dead wire links to each other with the bottom of the chi of making a concerted effort; The lower ends of upwards walking around rotating shaft and the spring of making a concerted effort then connects; Chi can only be moved up and down by the through hole restriction with joint efforts, and the upper end of steel bar links to each other lower end and component chi lower ends with component spring upper end respectively synchronously; Component chi upper end is through can move freely behind the spacing ring, and spacing ring is hinged on the top of chi with joint efforts.
The beneficial effect of the utility model is: the utility model can demonstrate that multiple situation exerts oneself synthetic with decompose: demonstration component makes a concerted effort greater than making a concerted effort, equaling, less than making a concerted effort; Demonstrate constantly with joint efforts, force direction was constant in one minute, the complicated mechanics problem of another minute force direction continually varying.Let the student obtain directly perceived, lively cognitive effect.
Description of drawings:
Accompanying drawing is the synthetic and structural representation that decomposes demonstration device of the utility model power.
Embodiment
With reference to accompanying drawing; Rotating shaft (11), semi-circular track (16) are fixed on the support (1); Spring supporting bar (3), (4) lower end are hinged in the rotating shaft (11), and semi-circular track (16) is passed in the upper part of spring supporting bar (3), (4) can do circle swing, and three springs (8), (9), (10) one ends are connected with gimbal (2) respectively; The other end has hook and is separately fixed on support (1) and support bar (3), (4); One end of stone dead wire (12) links to each other with the bottom of the chi (5) of making a concerted effort, and the lower ends of upwards walking around rotating shaft (11) and the spring (8) of making a concerted effort then connects, and the chi (5) of making a concerted effort is limited by through hole (17) to move up and down; The upper end of steel bar (14), (15) links to each other with component spring (9), (10) upper end respectively synchronously; Lower end and component chi (6), (7) lower ends, component chi (6), (7) upper end are through can move freely behind the spacing ring (13), and spacing ring (13) is hinged on the top of chi (5) with joint efforts.
Experiment one: spring (8) is fixed on the hook of front end on the support (1) after pulling down to maximum length making a concerted effort; Move down by rotating shaft (11) after gimbal (2) is stressed and stop; Chi (5) constant amplitude under the pulling of stone dead wire (12) of making a concerted effort rises; Spur component spring (9), (10) respectively and reach certain-length and hook is fixed on support bar (3), (4), component chi (6), (7) same moved further, rotary supporting rod (3), (4) rise to the initial position state that restores balance up to gimbal (2) simultaneously.At this moment, can see that component chi (6), (7) surround parallelogram with support bar (3), (4), the chi (5) of making a concerted effort is its diagonal line.
Experiment two: the pulling force that on the basis of experiment one, changes component spring (9), (10) respectively; Make its greater than, equal, less than making a concerted effort three kinds of situation; The angle of adjustable support bar (3), (4) makes gimbal return to equilibrium state once more, sees that parallelogram occurs.
Experiment three: the position of fixing left support bar (3) on the basis of experiment one; Let right support bar (4) forward vertical position gradually to by horizontal level; Regulate the pulling force of two component springs (9), (10) simultaneously, make gimbal be in the equilibrium position, see the appearance of parallelogram.
Claims (1)
1. the synthetic and decomposition demonstration device of power is made up of support, gimbal, spring supporting bar, the chi of making a concerted effort, component chi, spring, rotating shaft, stone dead wire, spacing ring, synchronous steel bar, semi-circular track, through hole etc.; It is characterized in that: rotating shaft (11), semi-circular track (16) are fixed on the support (1); Spring supporting bar (3,4) lower end is hinged in the rotating shaft (11); Semi-circular track (16) is passed in the upper part of spring supporting bar (3,4) can do circle swing; Three springs (8,9,10) end is connected with gimbal (2) respectively, and the other end has hook and is separately fixed on support (1) and the spring supporting bar (3,4), and an end of stone dead wire (12) links to each other with the bottom of the chi (5) of making a concerted effort; The lower ends of upwards walking around rotating shaft (11) and the spring (8) of making a concerted effort then connects; Chi (5) can only be moved up and down by through hole (17) restriction with joint efforts, and the upper end of steel bar (14,15) links to each other lower end and component chi (6,7) lower ends with component spring (9,10) upper end respectively synchronously; Component chi (6,7) upper end is through can move freely behind the spacing ring (13), and spacing ring (13) is hinged on the top of chi (5) with joint efforts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204533609U CN202352185U (en) | 2011-11-16 | 2011-11-16 | Device for demonstrating composition and decomposition of force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204533609U CN202352185U (en) | 2011-11-16 | 2011-11-16 | Device for demonstrating composition and decomposition of force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202352185U true CN202352185U (en) | 2012-07-25 |
Family
ID=46541171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204533609U Expired - Fee Related CN202352185U (en) | 2011-11-16 | 2011-11-16 | Device for demonstrating composition and decomposition of force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202352185U (en) |
-
2011
- 2011-11-16 CN CN2011204533609U patent/CN202352185U/en not_active Expired - Fee Related
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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: 20120725 Termination date: 20121116 |