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.
作者
韩卫华
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)
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。
关键词
角动量定理
非质心参考点
碰撞
angular momentum theorem
non-centroid system
collision
