转动惯量平行轴定理验证实验的改进方案

doi:10.16854 /j.cnki.1000-0712.190392

College Physics ›› 2020, Vol. 39 ›› Issue (05): 66-69.doi: 10.16854 /j.cnki.1000-0712.190392

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An improvement to the verification of parallel axis theorem for moment of inertia

YAN Min1，DAI Yu-qin1，YUAN Jun2，WANG Xiao-xiong2

1. Tsien Hsue-Shen College，Nanjing University of Science and Technology，Nanjing，Jiangsu 210094，China; 2. College of Science，Nanjing University of Science and Technology，Nanjing，Jiangsu 210094，China

Received:2019-08-26 Revised:2019-10-16 Online:2020-05-20 Published:2020-05-17

Abstract

Abstract: An improved experiment scheme about the verification of parallel axis theorem for moment of inertia

is introduced. In the new scheme，the moment of inertia of the whole system is changed by changing the distance of

the steel pillars to the instrument rotational axis symmetrically. The variation of moment of inertia is made in a large

range and the symmetrical mass distribution is preserved. So that the relative error is significantly reduced and the

reliability of the verification of the theorem is substantially improved.

Key words: moment of inertia, parallel axis theorem, verification, experimental scheme, relative error

YAN Min, DAI Yu-qin, YUAN Jun, WANG Xiao-xiong. An improvement to the verification of parallel axis theorem for moment of inertia[J].College Physics, 2020, 39(05): 66-69.

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An improvement to the verification of parallel axis theorem for moment of inertia

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