杆摆中的内力、内力矩及其功  

The internal forces,the moment of internal forces and the work done by them in a moving rod pendulum

作　　者：彭长德[1] 杭桂生[1] 

机构地区：[1]徐州师范大学物理系,江苏徐州221116

出　　处：《大学物理》2007年第1期19-21,37,共4页College Physics

摘　　要：讨论了杆摆运动中的切向内力及其力矩、法向内力及其力矩;计算了内力及内力矩所作的功,这对进一步理解“质点”、“刚体”等概念有一定的参考价值．The tangential in,ternal force and its moment and the normal internal force and its moment in a moving rod pendulum are discussed. The work done by the internal forces and the moment Of internal forces are calculated. The discussion might be meaningful for correctly understanding some physical models like particle and rigid body.

关 键 词：杆摆 内力 内力矩 功 

分 类 号：O313[理学—一般力学与力学基础]