关键词: 转动惯量, 平行轴定理, 验证, 实验方案, 相对误差

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