CN203300098U - Demonstration instrument for speed changing of circling motion - Google Patents
Demonstration instrument for speed changing of circling motion Download PDFInfo
- Publication number
- CN203300098U CN203300098U CN2013203338275U CN201320333827U CN203300098U CN 203300098 U CN203300098 U CN 203300098U CN 2013203338275 U CN2013203338275 U CN 2013203338275U CN 201320333827 U CN201320333827 U CN 201320333827U CN 203300098 U CN203300098 U CN 203300098U
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- China
- Prior art keywords
- circular plate
- demonstration instrument
- lower disc
- utility
- model
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a demonstration instrument for speed changing of a circling motion. The demonstration instrument is composed of an upper circular plate and a lower circular plate, wherein the upper circular plate is perpendicular to the lower circular plate. The side wall of the upper circular plate is contacted with the upper surface of the lower circular plate; the upper circular plate is connected to a support rod by a spring; the support rod is fixed at the pedestal; and the lower circular plate is connected to a motor by a connecting rod. When the demonstration instrument is used, the motor is started to enable the demonstration instrument to rotate and thus the upper circular plate is horizontally pushed; and the spring enables the upper circular plate to make motions along the diameter direction of the upper surface of the lower circular plate, thereby changing a distance between the center of a circle of the upper surface of the lower circular plate and the upper circular plate. Therefore, students can observe that the rotating speed of the upper circular plate is changed obviously.
Description
Technical field
The utility model relates to a kind of demonstrator, relates in particular to a kind of circular motion speed change demonstrator.
Background technology
The junior school student can contact the concept of circular motion in learning physics at present, but does not have at present what good teaching aid can show better the variation of circular motion process medium velocity.
The utility model content
The utility model, for the deficiencies in the prior art, provides a kind of circular motion speed change demonstrator.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of circular motion speed change demonstrator comprises disk and lower disc, described upper disk is perpendicular to the lower disc setting, the sidewall of described upper disk and the upper surface of lower disc contact, described upper disk is connected on support bar by spring, described support bar is fixed on base, and described lower disc is connected with motor by connecting link.
The beneficial effects of the utility model are: the utility model circular motion speed change demonstrator in use, starting motor rotates by lower disc, just can laterally promote disk, by spring, upper disk is moved along the direction of lower disc upper surface diameter, thereby change the distance between the lower disc upper surface center of circle and upper disk, so just can observe the rotating speed generation significant change of disk.
Description of drawings
Fig. 1 is the structural representation of the utility model circular motion speed change demonstrator.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example only is used for explaining the utility model, not is used for limiting scope of the present utility model.
As shown in Figure 1, described circular motion speed change demonstrator comprises disk 6 and lower disc 1, described upper disk 6 arranges perpendicular to lower disc 1, the upper surface of the sidewall of described upper disk 6 and lower disc 1 contacts, described upper disk 6 is connected on support bar 5 by spring 2, described support bar 5 is fixed on base 7, and described lower disc 6 is connected with motor 4 by connecting link 3.
In the utility model, upper disk and lower disc contact position linear velocity equate to be the radius of the angular velocity that distance=upper disk rotates * upper disk between the angular velocity that rotates of lower disc * lower disc upper surface center of circle and upper disk, when promoting disk or pulling upper disk by spring like this, can change the distance between the lower disc upper surface center of circle and upper disk, and then cause the variation of the angular velocity of disk rotation.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (1)
1. circular motion speed change demonstrator, it is characterized in that, comprise disk and lower disc, described upper disk is perpendicular to the lower disc setting, the sidewall of described upper disk and the upper surface of lower disc contact, described upper disk is connected on support bar by spring, and described support bar is fixed on base, and described lower disc is connected with motor by connecting link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203338275U CN203300098U (en) | 2013-06-09 | 2013-06-09 | Demonstration instrument for speed changing of circling motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203338275U CN203300098U (en) | 2013-06-09 | 2013-06-09 | Demonstration instrument for speed changing of circling motion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203300098U true CN203300098U (en) | 2013-11-20 |
Family
ID=49576094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203338275U Expired - Fee Related CN203300098U (en) | 2013-06-09 | 2013-06-09 | Demonstration instrument for speed changing of circling motion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203300098U (en) |
-
2013
- 2013-06-09 CN CN2013203338275U patent/CN203300098U/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: 20131120 Termination date: 20140609 |