非质心系的角动量定理  

Angular momentum theorem in a non-centroid system

作　　者：韩卫华[1] 刘青芳 王建波 王丽 Han Wei-hua;Liu Qing-fang;Wang Jian-bo;Wang Li(School of Physical Science and Technology,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]兰州大学物理科学与技术学院,甘肃兰州730000

出　　处：《大学物理》2024年第10期26-29,共4页College Physics

基　　金：2022年度拔尖计划2.0研究课题(20221040)资助。

摘　　要：选择适当的参考点在解决刚体运动问题中至关重要,能有效简化问题处理.相对于质心转轴,非质心系提供更为灵活的视角.本文通过推导非质心系的角动量定理,以小球碰撞自由杆模型为例,展示了其在实际问题中的应用.本文为读者提供了处理刚体运动问题的新思路,特别是在复杂情境下更为直观.Choosing an appropriate reference point is crucial in solving rigid body motion problems,effectively simplifying the problem-solving process.In comparison to the center of mass axis,a non-centroid axis of rotation provides a more flexible perspective.This paper,by deriving the angular momentum theorem in a non-centroid system and using the example of a ball colliding with a free rod,illustrates its practical application in real-world scenarios.The paper offers readers a novel approach to addressing rigid body motion problems,particularly providing intuitive insights in complex situations.

关 键 词：角动量定理 非质心参考点 碰撞 

分 类 号：O313.3[理学—一般力学与力学基础]