均质并有对称面的刚体转动惯量的一个定理

A theorem about inertia of homogeneous rigid body with a symmetry plane

提出并证明了一个关于刚体转动惯量的新定理.该定理指出具有对称面的均质刚体,当位于与对称面垂直的某个平面上的转轴满足特定条件时,转动惯量大小与位于该平面上的转轴方向无关.

A new theorem about the moment of inertia of rigid body is proposed and proved.This theorem states that the inertia of a homogeneous rigid body with a symmetry plane is not concerned in any direction of the axis that lie in that plane,when the axis that lie in a plane which be perpendicular to the symmetry plane meet certain conditions.