对角动量和力矩的定义以及角动量守恒条件的讨论

Analyzing the Definitions of the Angular Momentum, the Moment of Force and the Condition for the Conservation of Angular Momentum

本文讨论了角动量和力矩的几个定义之间的关系,同时通过例题讨论了如何合理地使用角动量守恒定律求解实际问题。

In this paper, the author analyzes the definitions of the angular momentum and the moment of force in different situations and the relations of these definitions. The author also discusses the condition for the conservation of angular momentum in approximate calculation.