刚体完全弹性碰撞中e=1的简单证明  

A proof of e=1 in fully elastic collisions of rigid bodies

作　　者：陈艺灵 唐鹏 CHEN Yi-ling;TANG Peng(Tsinghua University High School,Beijing 100084,China)

机构地区：[1]清华大学附属中学,北京100084 [2]重庆思创教育服务有限公司,重庆400020

出　　处：《大学物理》2024年第9期24-25,39,共3页College Physics

摘　　要：本文给出了三维刚体与刚体完全弹性碰撞中,动能不损失等价于恢复系数e=1的证明,推广了以往在质点间碰撞、质点与刚体碰撞中得到的结果的适用范围.本文避开了碰撞中刚体转动能量的计算,以冲量和做功入手完成了一种简单的证明.This article provides a proof that the non loss of kinetic energy is equivalent tOthe recovery coefficient e=1 in a fully elastic collision between three-dimensional rigid bodies.This article extended the applicability of previous results which obtained in collisions between particles,and collisions between particle and rigid body.This proof avoids the calculation of rotational energy of rigid bodies,and completes a simple proof by starting with impulse and work done.

关 键 词：刚体 弹性碰撞 恢复系数 

分 类 号：O4-1[理学—物理]