7.5 angular momentu(角动量)_哔哩哔哩_bilibili
6.4Energy in Rotation Motion
有质量有速度的物体有动能,是不是很有道理
international system(from French systeme international,acronym,SI)of ineria kg*m^2
转动动能:物体由于运动所具有的能量
moment of inertia depends on the location and orientation of the axis