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摩擦力是指两个相互接触的物体要发生或者已经发生相对运动时产生的阻碍相对运动的力,摩擦力分为三种:静摩擦力、滚动摩擦力和滑动摩擦力。现作以下归纳总结。
Friction force refers to the force that hinders the relative movement when two mutually contacting objects are to occur or have occurred relative motion. The friction force is divided into three types: static friction force, rolling friction force and sliding friction force. Now sum up the following summary.