CN205194158U - Experimental device for spot test acceleration of gravity - Google Patents
Experimental device for spot test acceleration of gravity Download PDFInfo
- Publication number
- CN205194158U CN205194158U CN201521105022.0U CN201521105022U CN205194158U CN 205194158 U CN205194158 U CN 205194158U CN 201521105022 U CN201521105022 U CN 201521105022U CN 205194158 U CN205194158 U CN 205194158U
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- infrared
- controller
- gravity
- receiver
- signal receiver
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Abstract
The utility model discloses an experimental device for spot test acceleration of gravity, including the I shape device, the upper portion intermediate position of I shape device is equipped with the trompil, be equipped with the dog in the trompil, the spheroid has been put on the dog, the inside of first recess is equipped with an infrared emitter and an infrared receiver respectively, the inside of second recess is equipped with the 2nd infrared emitter and the 2nd infrared receiver respectively, the top left side of I shape device is equipped with the first signal receiver, controller and time -recorder respectively, the right side of support is equipped with the 2nd signal receiver, an infrared receiver passes through the the first signal receiver and is connected with the controller electricity, the 2nd infrared receiver is connected with the controller electricity through the 2nd signal receiver, the controller is connected with the time -recorder electricity. This experimental device for spot test acceleration of gravity is convenient quick, and the numerical result precision is high.
Description
Technical field
The utility model belongs to experiment device for teaching technical field, is specifically related to a kind of experimental provision of Fast Measurement acceleration of gravity.
Background technology
In senior middle school physics teaching, measure acceleration of gravity be one important be also basis experiment.Measure the method for acceleration of gravity and have many kinds, the same experimental provision measuring acceleration of gravity be also have multiple.There is the numerous and diverse problem of assay method in current acceleration of gravity determinator, and needs data and the reasoning of the many groups of record, cumbersome, can not measure acceleration of gravity fast.A kind of experimental provision of Fast Measurement acceleration of gravity is proposed for this reason.
Utility model content
The purpose of this utility model is the experimental provision providing a kind of Fast Measurement acceleration of gravity, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme: a kind of experimental provision of Fast Measurement acceleration of gravity, comprise I shape device, the upper middle position of described I shape device is provided with perforate, described perforate is provided with block, described block is placed with spheroid, the both sides of described perforate are provided with the first groove, the inside of described first groove is respectively equipped with the first infrared transmitter and the first infrared receiver, the second groove is respectively equipped with inside the support of described I shape device, the inside of described second groove is respectively equipped with the second infrared transmitter and the second infrared receiver, the top left side of described I shape device is respectively equipped with the first signal receiver, controller and timer, the right side of described support is provided with secondary signal receiver, described first infrared receiver is electrically connected with controller by the first signal receiver, described second infrared receiver is electrically connected with controller by secondary signal receiver, described controller is electrically connected with timer.
Preferably, described spheroid is steel ball.
Preferably, the diameter of described perforate is greater than the diameter of spheroid.
Technique effect of the present utility model and advantage: the experimental provision of this Fast Measurement acceleration of gravity, when measuring acceleration of gravity, initial velocity during release spheroid is zero, open the first infrared transmitter and the second infrared transmitter, and the infrared ray that the first infrared transmitter sends flushes with the bottom of spheroid, extract block out, fall of ball, when spheroid blocks the infrared ray that the first infrared transmitter sends, first infrared receiver does not receive infrared ray, now by the first signal receiver, signal is sent to controller, timing by controller controls timer, when spheroid blocks the infrared ray that the second infrared transmitter sends, second infrared receiver does not receive infrared ray, now by secondary signal receiver, signal is sent to controller, control timer by controller and stop timing, because the distance of fall of ball can be measured, time reads from timer, by formula H=1/2gt
2acceleration of gravity can be calculated easily and fast.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1 I shape device, 2 supports, 3 second grooves, 4 second infrared transmitter, 5 first infrared transmitter, 6 second infrared receivers, 7 first infrared receivers, 8 secondary signal receivers, 9 first grooves, 10 blocks, 11 spheroids, 12 first signal receivers, 13 controllers, 14 timers, 15 perforates.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model provides the experimental provision of a kind of Fast Measurement acceleration of gravity as shown in Figure 1, comprise I shape device 1, the upper middle position of described I shape device 1 is provided with perforate 15, described perforate 15 is provided with block 10, described block 10 is placed with spheroid 11, described spheroid 11 is steel ball, the diameter of described perforate 15 is greater than the diameter of spheroid 11, the both sides of described perforate 15 are provided with the first groove 9, the inside of described first groove 9 is respectively equipped with the first infrared transmitter 5 and the first infrared receiver 7, the second groove 3 is respectively equipped with inside the support 2 of described I shape device 1, the inside of described second groove 3 is respectively equipped with the second infrared transmitter 4 and the second infrared receiver 6, the top left side of described I shape device 1 is respectively equipped with the first signal receiver 12, controller 13 and timer 14, the right side of described support 2 is provided with secondary signal receiver 8, described first infrared receiver 7 is electrically connected with controller 13 by the first signal receiver 12, described second infrared receiver 6 is electrically connected with controller 13 by secondary signal receiver 8, described controller 13 is electrically connected with timer 14.
Measuring principle: when measuring acceleration of gravity, initial velocity during release spheroid 11 is zero, open the first infrared transmitter 5 and the second infrared transmitter 4, and the infrared ray that the first infrared transmitter 5 sends flushes with the bottom of spheroid 11, extract block 10 out, spheroid 11 falls, when spheroid 11 blocks the infrared ray that the first infrared transmitter 5 sends, first infrared receiver 7 does not receive infrared ray, now by the first signal receiver 12, signal is sent to controller 13, timing by controller 13 controls timer 14, when spheroid 11 blocks the infrared ray that the second infrared transmitter 4 sends, second infrared receiver 6 does not receive infrared ray, now by secondary signal receiver 8, signal is sent to controller 13, control timer 14 by controller 13 and stop timing, because spheroid 11 drop can be measured, time reads from timer 14, by formula H=1/2gt
2acceleration of gravity can be calculated easily and fast.
Last it is noted that the foregoing is only preferred embodiment of the present utility model; be not limited to the utility model; although be described in detail the utility model with reference to previous embodiment; for a person skilled in the art; it still can be modified to the technical scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; all within spirit of the present utility model and principle; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the experimental provision of a Fast Measurement acceleration of gravity, comprise I shape device (1), it is characterized in that: the upper middle position of described I shape device (1) is provided with perforate (15), described perforate (15) is provided with block (10), described block (10) is placed with spheroid (11), the both sides of described perforate (15) are provided with the first groove (9), the inside of described first groove (9) is respectively equipped with the first infrared transmitter (5) and the first infrared receiver (7), support (2) inner side of described I shape device (1) is respectively equipped with the second groove (3), the inside of described second groove (3) is respectively equipped with the second infrared transmitter (4) and the second infrared receiver (6), the top left side of described I shape device (1) is respectively equipped with the first signal receiver (12), controller (13) and timer (14), the right side of described support (2) is provided with secondary signal receiver (8), described first infrared receiver (7) is electrically connected with controller (13) by the first signal receiver (12), described second infrared receiver (6) is electrically connected with controller (13) by secondary signal receiver (8), described controller (13) is electrically connected with timer (14).
2. the experimental provision of a kind of Fast Measurement acceleration of gravity according to claim 1, is characterized in that: described spheroid (11) is steel ball.
3. the experimental provision of a kind of Fast Measurement acceleration of gravity according to claim 1, is characterized in that: the diameter of described perforate (15) is greater than the diameter of spheroid (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521105022.0U CN205194158U (en) | 2015-12-28 | 2015-12-28 | Experimental device for spot test acceleration of gravity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521105022.0U CN205194158U (en) | 2015-12-28 | 2015-12-28 | Experimental device for spot test acceleration of gravity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205194158U true CN205194158U (en) | 2016-04-27 |
Family
ID=55787129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521105022.0U Expired - Fee Related CN205194158U (en) | 2015-12-28 | 2015-12-28 | Experimental device for spot test acceleration of gravity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205194158U (en) |
-
2015
- 2015-12-28 CN CN201521105022.0U patent/CN205194158U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20161228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |