A tensile tester for high school students' physics experiments
A high school physics and testing instrument technology, applied in the field of physics teaching experiment equipment, can solve the problems of single function of the device, many limiting factors, short timing of the electromagnetic dotting timer, etc., and achieve the effect of reducing air resistance and high experimental accuracy
Active Publication Date: 2020-09-22
邵思哲
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Problems solved by technology
[0003] However, in the above method, there are too many limiting factors. First, balance the friction force, provide a slope to balance the friction force of the slope, and perform mechanical decomposition according to the angle of the slope. The angle of the slope cannot be changed arbitrarily; The timing of the dotting timer is short, and the instant pulling force is verified through the process experiment, and the error is large, and the device has a single function; therefore, the present invention provides a pulling force tester for high school students' physics experiments
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[0033] As a preferred embodiment of the present invention, the opening of the magnetic repulsion tank plate 122 is facing upwards and is arranged centripetally on the rotating disk 12, and the other side of the electronic spring tension gauge 14 is provided with a tension connector. The tension connector is connected with the test square block 13 through the wire body 3 .
[0034] As a preferred embodiment of the present invention, the two side walls and the bottom side wall of the test square block 13 are all provided with permanent magnet plates, and the inner side walls of the magnetic repulsion slot plate 122 are symmetrically provided with electromagnetic plates one 1221 and located at The second electromagnetic plate 1222 is arranged at the bottom of the groove, and the first electromagnetic plate 1221 and the second electromagnetic plate 1222 are used in conjunction with the permanent magnet plate.
[0035] As a preferred embodiment of the present invention, the bottom ...
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The invention discloses a high school student physical experiment tensile tester. The tester comprises a vacuum combination device and a control tray placed at the bottom of the vacuum combination device; the vacuum combination device comprises a transparent circular enclosure cover, a rotating disk, a test square block and an electronic spring tensile meter; the top side wall and the bottom sidewall of the transparent circular enclosure cover are provided with two sealing fitting sleeves communicated with an inner cavity; according to the tester, the transparent circular enclosure cover on the vacuum combination device is adopted, a vacuum pump is used for providing a vacuum environment, air resistance is reduced, an environment simulating space satellite motions is provided, a first three-sided electromagnetic board and a second electromagnetic board are arranged in a magnetic repelling groove plate, the test square block therein is suspended by a permanent magnet steel plate, thereby eliminating any frictional resistance, the electronic spring tensile meter and the test square block are connected by a centripetal force, so that the experimental process is only related to the tensile force generated by the single electronic spring tensile meter, and the experimental accuracy is high.
Description
technical field [0001] The invention relates to the technical field of physics teaching experiment equipment, in particular to a tension tester for physics experiments for high school students. Background technique [0002] Newton's second law, F=ma, is an instantaneous law. The instantaneous acceleration can be used to measure the homeopathic pulling force. However, the current experimental method uses the method of sliding on an inclined plane, usually using constant gravity to decompose into the converted constant pulling force, and counting time with the help of electromagnetism. The device measures the displacement and time of the object being measured, and then calculates the acceleration, and verifies the relationship between the constant pulling force and the acceleration with the mass of the object; [0003] However, in the above method, there are too many limiting factors. First, balance the friction force, provide a slope to balance the friction force of the slope...
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IPC IPC(8): G09B23/10
CPCG09B23/10
Inventor 邵思哲
Owner 邵思哲