Abstract: Dalembert's theorem is employed in this article to solve the problem of mass point system turning around a moving Point, the way proposed in this article is more simple, convenient and coefficient than the traditional way in which the equation and the procedures arc very comlicated.

Key words: Dalembert theorem, angular momentum theorem, turning

摘要： 在解决质系相对于动点转动的动力学问题时,过去一直采用质系相对于动点的动量矩定理。该定理在解决此类问题时,公式较为复杂,计算较为繁锁,错误较易发生。为此,本文作者另辟捷径,引入达朗伯原理解决这类问题,结果使得概念更加清楚,方法更加简单,应用更加方便,有一定的研究意义及实用价值。

关键词: 达朗伯原理, 动量矩定理, 转动