Gravity testing device for education science and technology

Abstract

The invention discloses a gravity testing device for education science and technology, and relates to the field of gravity testing devices. The gravity testing device comprises a box body, an electromagnet is fixedly connected to the top end of an inner cavity of the box body, a material barrel is arranged at the bottom end of the electromagnet, the material barrel is composed of a barrel body and a barrel cover, a threaded rod is fixedly connected to the bottom end of the barrel cover and is in threaded connection with the top of the inner wall of the barrel body, a plurality of weight increasing blocks are arranged in an inner cavity of the barrel, a timing mechanism is arranged on the inner wall of one side of the box body, a first photoelectric switch and a second photoelectric switch are fixedly connected to one side of the box body in a penetrating mode, and the timer is fixedly connected to one side of the box body. The material barrel composed of the barrel body, the barrel cover and a threaded rod is matched with the weight increasing blocks arranged in the material barrel, the mass of the material barrel is changed by increasing or decreasing the number of the weight increasing blocks in the material barrel, the surface area of the measured material barrel is kept the same, and therefore, the error of a measurement result caused by air resistance when the material barrel falls is reduced, and the accuracy of the gravity test is improved.

Description

technical field [0001] The invention relates to the field of gravity testing devices, in particular to a gravity testing device for educational technology. Background technique [0002] With the development of science and technology fans, the country pays more and more attention to the science and technology education of students. Physics is one of the most basic subjects in the natural sciences. Compared with other subjects, it is more abstract and complex, so it is necessary to carry out physical education in the process of teaching physics. A large number of demonstration experiments are used to assist teaching. For students who are new to physics, gravity is a basic course, so it is necessary to strengthen the teaching effect through the gravity experiment simulation device. [0003] Most of the test objects used in the gravity test devices used today will choose objects with the same material and different sizes. Although this meets the requirements of different masses ...

AI Technical Summary

Problems solved by technology

[0003] Most of the test objects used in the gravity test devices used today will choose objects with the same material and different sizes. Although this meets the requirements of different masses of the test objects, the surface area of ​​the same substance is different due to the different masses of the same substance. , resulting in different frictional resistance of the test object during the falling process, thereby reducing the gravity error of the two tested objects and affecting the accuracy of the test

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