摘要
在刚体平面平行运动的动力学问题中，一般容易根据已知条件写出动力学方程，但解决问题的关键取决于能否根据约束条件写出运动的约束方程．
Generally it is easy to create the equations on dynamics according to the known conditions on the dynamics of plane-parallel motion of the rigid body.And the key to the solution depends on creating restrict conditions.
关键词
约束方程
几何关系
刚体动力学
平面平行运动
plane-parallel motion of rigid body, restrict equation, dynamics, geometric relation.
