刚体平面运动时相对速度瞬心的动量矩定理

Theorem of momentum quadrature of comparative speed in movement of rigid body

在力学教材有关动量矩定理内容中,一般只给出矩心是固定点或质心的质点系动量矩定理。文章推导出刚体做平面运动时,相对速度瞬心的动量矩定理,为扩展动量矩定理的应用范围提供依据。

In the textbook of mechanics on momentum quadrature, theorem ofmomentum quadrature of quadrature center or center of mass are generally given. This paper deduces theorem of momentum quadrature of comparativespeed in movement of rigid body, which supplies gist for enrich its range ofapplication.