关于动点的速度合成定理的一个推论  

A Inference of the Theory of Velocity Composite on a Moving Point

作　　者：张于贤[1] 王红[1] 周清华[1] 李军[1] 

机构地区：[1]桂林电子工业学院管理系,广西桂林541004

出　　处：《桂林电子工业学院学报》2002年第5期64-67,共4页Journal of Guilin Institute of Electronic Technology

摘　　要：动点在作复合运动时 ,若动点的牵连运动只涉及到一个动参考系时 ,则动点的速度合成已有相应的定理。但若动点的牵连运动涉及到多个动参考系 ,目前尚无专门论述。通过在原有基础上提出动点速度合成定理的推论 ,并分别就具有两个和多个动参考系时动点的速度合成公式给出了两种证明方法 。There has been theorem developed to expound the multiplex motion of a moving point whose related motion entails only one motion coordinating system.However,there has been little discussion on the multiplex motion of a moving point that involves several motion coordinating systems.In this paper,we introduce a theorem we have developed on the basis of the one motion coordinating system theorem and present two different ways to demonstrate respectively the inference of the formula of the velocity composite of a moving point in two coordinating systems and the formula in more than two coordinating systems.We have found that the velocity composite of a moving point can be better approached with the theorem in question.Therefore,it serves as a more efficient theorem in its field.

关 键 词：动点 速度合成 牵连运动 动参考系 

分 类 号：O311[理学—一般力学与力学基础]