摘要
讨论滑动摩擦力作功,说明了滑动摩擦力可以使刚体的平动动能和转动动能之间相互转换,但总是作负功。
This paper discusses work of sliding friction force.It is pointed out that translational kinetic energy and rotational kinetic energy mutually transferred by sliding friction force, but it only has positive acting.
关键词
有滑滚动
滑动摩擦力
平动动能
转动动能
rolling and sliding
sliding friction force
translational kinetic energy
rotational kinetic energy
