A centripetal force verification device

Abstract

The invention relates to the field of teaching equipment, in particular to a centripetal force verification device. "Centripetal force" is a compulsory course for modern elementary physics subjects. It has been studied in junior high schools, and in-depth research is required in high schools. It is also a research focus in universities. In physics teaching, compared with cramming teaching, experimental discussion teaching can enable students to deeply understand and master what they have learned. In the experiment, students can fully participate in it. Each study group can measure and obtain different experimental data. And carry out calculation and verification according to the experimental data measured by oneself. A kind of centripetal force verification device disclosed by the present invention has the characteristics of simple operation, clear force analysis and accurate measurement. Multiple experiments can be done in the classroom for comparative verification, so that students Understand and master the key points and difficulties related to centripetal force faster, and lay a solid foundation for later in-depth research.

Description

technical field [0001] The invention relates to the field of teaching equipment, in particular to a centripetal force verification device. Background technique [0002] "Centripetal force" is a compulsory course in modern physics. It has been studied in junior high school, and in-depth research is required in high school. It is also the focus of research in universities. In physics teaching, experimental and seminar teaching is more effective than cramming teaching. Let students deeply understand and master the knowledge they have learned. Students can be fully involved in the experiment. Each study group can experiment and discuss in person. [0003] The centripetal force verification device in the prior art is generally two sets of different pulleys connected by belts. A rotating arm is arranged at the top, and two decks are arranged on the rotating arm. The teacher puts small balls of the same weight or different weights into the decks and shakes them. Handle, after the ...

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Problems solved by technology

[0003] The centripetal force verification device in the prior art is generally two sets of different pulleys connected by belts. A rotating arm is arranged at the top, and two decks are arranged on the rotating arm. The teacher puts small balls of the same weight or different weights into the decks, and shakes them. Handle, after the rotation speed is relatively stable, observe the decline ratio of the drums at the top of the two pulleys to verify the amount related to the centripetal force. Using a hand crank for such a device not only cannot stabilize the rotation speed, but also can only be used for rough qualitative verification, and cannot be discussed quantitatively. Students In the experiment, it is only understood, and it is not sure whether there are other unknown relationship quantities that can affect the centripetal force; besides, there are only two decks on the rotating arm, the experimental data is limited, and the convincing power is not strong, so it can only be used as a demonstration. Cannot be used as a verification device

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