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高中阶段摩擦力的学习主要有静摩擦力和滑动摩擦力。解题时首先要弄清是哪一种摩擦力,它有什么特点。人教版必修1对它们的定义是这样的:相互接触的两个物体之间只有相对运动的趋势,而没有相对运动,所以这时的摩擦力叫静摩擦力。静摩擦力的方向总是沿着接触面,并且跟物体相对运动趋势的方向相反。当一个物体在另一个物体表面滑动的时候,会受到另一个物体阻碍它滑动的力,这种力叫做滑动摩擦
High school stage friction learning mainly static friction and sliding friction. When solving the problem, we must first understand what kind of friction, what are its characteristics. PEP 1 is a definition of them is this: between two objects touching each other only the relative movement of the trend, but no relative movement, so the friction at this time is called static friction. The direction of static friction is always along the contact surface and opposite to the tendency of the object to move in the opposite direction. When an object slides on the surface of another object, it is hindered by the sliding force of another object. This force is called sliding friction