Parallel Axis Theorem
平行轴定理
The moment of inertia of any object about an axis through its center of mass is the minimum moment of inertia for an axis in that direction in space. The moment of inertia about any axis parallel to that axis through the center of mass is given by
 The expression added to the center of mass moment of inertia will be recognized as the moment of inertia of a point mass - the moment of inertia about a parallel axis is the center of mass moment plus the moment of inertia of the entire object treated as a point mass at the center of mass. 加到质心转动惯量的表达式将被识别为点质量的转动惯量——通过平行轴定理，绕某轴的转动惯量等于质心转动惯量加上将整个物体视为质心处点质量的转动惯量。
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任何物体关于通过其质心轴的转动惯量是该方向在空间中的最小转动惯量。关于通过质心的任意平行轴的转动惯量由
Moment of inertia concepts
索引 转动惯量概念
| HyperPhysics***** Mechanics
力学 | R Nave |
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