Parallel-Axis Theorem

Core Sentence / 核心句

Moving a rotation axis a perpendicular distance $d$ from a parallel center-of-mass axis increases rotational inertia by $M{d}^2$.
$I=I_{CM}+M{d}^2$

Watch Out / 易错点

两轴必须平行，$d$ 是轴间垂距。

Mentioned In / 出现位置

• 第9次正课 · theorem

Connected Notes / 连接

• Rotational Inertia
• Center of Mass