论文部分内容阅读
当一个物体在另一个物体表面上有相对运动的趋势时,在接触面处就会产生一种阻碍物体相对运动趋势的力,这个力就是静摩擦力．静摩擦力的方向总是跟物体相对运动趋势的方向相反．如果物体相对于
When an object has a tendency of relative movement on the surface of another object, a force that obstructs the relative movement of the object is generated at the contact surface, and this force is the static friction force. The direction of static friction is always the opposite of the relative movement of the object. If the object is relative to