物理学 第五版 4-3角动量角动量守恒定律 刚体定轴转动的角动量定理和角动量守恒定律 (The theorem of angular momentum The law of conservation of angular momentum of a rigid body rotating about fixed axis 1刚体定轴转动的角动量 (The angular momentum of a rigid body rotating about fixed axis) L 11.F7 2 L=Ja 第四章刚体的转动 14344-3 角动量 角动量守恒定律 第四章 刚体的转动 物理学 第五版 14/34 二刚体定轴转动的角动量定理和角动量守恒定律 1 刚体定轴转动的角动量 2 ( ) i i i i i i i L m r m r  = =   v L = J L J =  (The theorem of angular momentum &The law of conservation of angular momentum of a rigid body rotating about fixed axis )  z O i r  mi i v  (The angular momentum of a rigid body rotating about fixed axis )