一类相似形刚体滚动运动规律的演示与分析

Demonstrating and analyzing to the roll discipline of a group of similar rigid bodies

给出一类相似形刚体作平面平行运动时质心运动规律的实验演示,并从理论上给予分析,得出了具有一定对称性分布的相似形的刚体在同一斜面上纯滚动时质心加速度相同,理论与实验结果相一致.

It is a demonstrative experiment about law of motion of the centroid,a group of similar rigid bodies make plane-parallel motion on the same inclined plane,and analysis it on theory.The rigid bodies having a certain symmetry distribution and density distribution have a same centroid acceleration when they make pure rolling on the same inclined plane,so the theory conforms to the experiment exactly.