Physical experiment centripetal force demonstration device

Abstract

The invention discloses a physical experiment centripetal force demonstration device. The device comprises a first shell, the first shell is cylindrical, the inner cylindrical surface of the first shell is horizontally and fixedly connected with a circular plate; n circular ring grooves which are concentric with the circular plate are formed in the circular plate; the annular grooves are arrangedat equal intervals, a plurality of electric telescopic rods with upward movable rods are fixedly connected to the inner bottom surfaces of the circular ring grooves; horizontal first circular ring plates are arranged in the circular ring grooves; the upper ends of the movable rods of all the electric telescopic rods in the same annular groove are fixedly connected with the lower surface of the corresponding first annular plate, a through hole is formed in the center of the circular plate, a vertical first rotating shaft is arranged in the first shell, the first rotating shaft penetrates through the through hole, and the first rotating shaft is connected with the circular plate and the first shell through rolling bearings. The device is simple in structure and convenient to operate, and experimental variables are easy to control.

Description

technical field [0001] The invention belongs to the field of teaching aids for physics experiments, in particular to a centripetal force demonstration device for physics experiments. Background technique [0002] "Centripetal force" is a very important knowledge point in high school physics knowledge. In teaching practice, the theoretical derivation process of this formula is too abstract and difficult for students to understand, and the experimental research carried out basically uses conical pendulum or similar devices. A rough verification of centripetal force lacks scientificity, accuracy and comparability, and the actual effect is not ideal; and the "centripetal force experiment demonstrator" used in textbooks over the years is only semi-quantitative, and the authorized announcement number is CN 106601092 B invention patent Disclosed: a centripetal force demonstration instrument, in which the number of steel balls 8 participating in the centripetal force experiment can ...

AI Technical Summary

Problems solved by technology

[0002] "Centripetal force" is a very important knowledge point in high school physics knowledge. In teaching practice, the theoretical derivation process of this formula is too abstract and difficult for students to understand, and the experimental research carried out basically uses conical pendulum or similar devices. A rough verification of centripetal force lacks scientificity, accuracy and comparability, and the actual effect is not ideal; and the "centripetal force experiment demonstrator" used in textbooks over the years is only semi-quantitative, and the authorized announcement number is CN 106601092 B invention patent Disclosed: a centripetal force demonstration instrument, in which the number of steel balls 8 participating in the centripetal force experiment can only increase in one direction during the experiment, and it is very inconvenient to take out the steel balls 8, so it is difficult to arbitrarily change the mass value in the centripetal force experiment according to the experimental requirements , it is difficult to obtain effective experimental results, and the experimental power is artificially provided, and the measurement results have large errors

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