CN204029219U - Angular momentum conservation demonstration instrument - Google Patents
Angular momentum conservation demonstration instrument Download PDFInfo
- Publication number
- CN204029219U CN204029219U CN201420524301.XU CN201420524301U CN204029219U CN 204029219 U CN204029219 U CN 204029219U CN 201420524301 U CN201420524301 U CN 201420524301U CN 204029219 U CN204029219 U CN 204029219U
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- China
- Prior art keywords
- angular momentum
- disk
- bearing
- momentum conservation
- demonstration instrument
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to angular momentum conservation demonstration instrument, this demonstrator comprises the pole that one end is connected with base, it is characterized in that: the other end of described pole is connected with the bottom central authorities of U-shaped support by bearing, the two ends of this U-shaped support are all connected with and which is provided with synchronous motor, bearing and disk, on disk, be provided with hook and connect small ball with wire rope, with wire be linked in sequence single-chip microcomputer and synchronous motor.
Description
Technical field
The utility model relates to a kind of demonstrator in teaching aid field, relates in particular to angular momentum conservation demonstration instrument.
Background technology
Angular momentum conservation law is one of ubiquitous philosophy of nature, and the angular momentum that the suffered bonding force square of the system that refers to is 1 o'clock system remains unchanged.In general physics of college teaching, by means of lecture experiment qualitatively, can help well student to understand and grasp this rule.Traditional method is to use rogowski swivel chair and be equipped with 2 dumbbells or cycle wheel that 1 comparatively heavy, by 2 people's compounding practices, is just accomplished.Due to system, affected by friction force larger, and demonstration effect is undesirable, and this device heaviness, and transfer/storage is all inconvenient.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, easy to operate angular momentum conservation demonstration instrument.
For addressing the above problem, angular momentum conservation demonstration instrument described in the utility model, comprise the pole that one end is connected with base, it is characterized in that: the other end of described pole is connected with the bottom central authorities of U-shaped support by bearing, the two ends of this U-shaped support are all connected with and which is provided with synchronous motor, bearing and disk, on disk, be provided with hook and connect small ball with wire rope, with wire be linked in sequence single-chip microcomputer and synchronous motor.
The demonstration of the conservation of angular momentum
First switch on power, then two identical synchronous motors are controlled by single-chip microcomputer and rotated 2 minutes along contrary direction, two identical disks are provided with hook wire rope and connect small ball and start to rotate along contrary direction thereupon, after 2 minutes, two identical synchronous motors stop operating, due to the existence of centrifugal force, two identical disks are provided with hook wire rope and connect small ball and can continue to rotate along contrary direction, and whole system (U-shaped support) is motionless.The generation of this phenomenon is because system angle momentum conservation, when initial, the total angular momentum of system is zero, when two identical disks be provided with hook connect with wire rope small ball start rotate after, two identical disks are provided with the angular momentum increase in the other direction that hook wire rope connects small ball, the total angular momentum of system remains zero, and whole system (U-shaped support) is motionless.
First switch on power, then two identical synchronous motors are controlled by single-chip microcomputer and rotated 2 minutes along identical direction, two identical disks are provided with hook wire rope and connect small ball and start to rotate along identical direction thereupon, after 2 minutes, two identical synchronous motors stop operating, due to the existence of centrifugal force, two identical disks are provided with hook wire rope and connect small ball and can continue to rotate along identical direction, and whole system (U-shaped support) starts to rotate.The generation of this phenomenon is because system angle momentum conservation, when initial, the total angular momentum of system is zero, when two identical disks be provided with hook connect with wire rope small ball start rotate after, two identical disks are provided with the equidirectional increase of angular momentum that hook wire rope connects small ball, the total angular momentum of system remains zero, and whole system (U-shaped support) must opposite spin.
The utility model compared with prior art has the following advantages: the utility model is provided with base, pole, bearing, U-shaped support, synchronous motor, disk, small ball from top to bottom successively, simple in structure, easy to operate.
Brief description of the drawings
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
In figure: 1-base 2-pole 3-U type support 4-synchronized motor 5-small ball 6-wire rope 7-bearing 8-disk 9-single-chip microcomputer 10-wire.
Embodiment
As shown in Fig. 1, angular momentum conservation demonstration instrument, this demonstrator comprises the pole (2) that one end is connected with base (1), it is characterized in that: the other end of described pole (2) is connected with the bottom central authorities of U type support (3) by bearing, the two ends of this U-shaped support (3) are all connected with and which is provided with synchronous motor (4), bearing (7) and disk (8), on disk (8), be provided with hook and connect small ball (5) with wire rope (6), with wire (10) be linked in sequence single-chip microcomputer (9) and synchronous motor (4).
Claims (1)
1. angular momentum conservation demonstration instrument, comprise the pole (2) that one end is connected with base (1), it is characterized in that: the other end of described pole (2) is connected with the bottom central authorities of U type support (3) by bearing, the two ends of this U-shaped support (3) are all connected with and which is provided with synchronous motor (4), bearing (7) and disk (8), on disk (8), be provided with hook and connect small ball (5) with wire rope (6), with wire (10) be linked in sequence single-chip microcomputer (9) and synchronous motor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524301.XU CN204029219U (en) | 2014-09-14 | 2014-09-14 | Angular momentum conservation demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524301.XU CN204029219U (en) | 2014-09-14 | 2014-09-14 | Angular momentum conservation demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204029219U true CN204029219U (en) | 2014-12-17 |
Family
ID=52069055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420524301.XU Expired - Fee Related CN204029219U (en) | 2014-09-14 | 2014-09-14 | Angular momentum conservation demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204029219U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979842A (en) * | 2017-05-01 | 2017-07-25 | 沈阳建筑大学 | Quick rotation inertia quality somascope |
| CN107014563A (en) * | 2017-04-28 | 2017-08-04 | 沈阳建筑大学 | Quick rotation inertia measuring instrument and its measuring method |
| CN107871425A (en) * | 2016-09-27 | 2018-04-03 | 天津启星动力科技有限公司 | Spin-off ball demonstrator |
-
2014
- 2014-09-14 CN CN201420524301.XU patent/CN204029219U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107871425A (en) * | 2016-09-27 | 2018-04-03 | 天津启星动力科技有限公司 | Spin-off ball demonstrator |
| CN107014563A (en) * | 2017-04-28 | 2017-08-04 | 沈阳建筑大学 | Quick rotation inertia measuring instrument and its measuring method |
| CN106979842A (en) * | 2017-05-01 | 2017-07-25 | 沈阳建筑大学 | Quick rotation inertia quality somascope |
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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: 20141217 Termination date: 20150914 |
|
| EXPY | Termination of patent right or utility model |