摘要
现行力学概念中尚有一些自相矛盾之处,比如:动量与能量有无区别?动能“身”在何处?动量做功还是动能做功?外力对物体的功等于该物体的动能吗?力与动能谁没有做功?标量可以代替矢量吗?匀变速运动是恒力作用的结果吗?作用力与反作用力始终相等吗?力小速度大吗?令人迷惑不解,对此提出质疑问难。
There are some self-contradictions in current mechanic conception, which include how to distinguish momentum from energy? What is the 'classification' of kinetic energy? Does the kinetic energy work or the energy work? Is the outside force worked on the object equal to the kinetic energy of the object? Who doesn't work, the force or the kinetic energy? Would vector be replaced by scalar? Is the motion with even variable velocity the result of constant force? Is acting force always equal to reacting force? Does the weak force have a high speed? All these are confused, thus questions are asked.
出处
《江汉石油学院学报》
CSCD
北大核心
2003年第1期123-125,共3页
Journal of Jianghan Petroleum Institute
关键词
力学
概念
动量
能量
定义
mechanics
conception
definition
question
