摩擦力是高中物理学习的重点、难点,也是历年来高考的热点,它往往与力的平衡、牛顿运动定律及机械能等知识联系在一起。学生学习摩擦力时普遍感到较困难,原因在于摩擦力产生条件的“复杂性”、方向的“隐蔽性”及大小的“多样性”。笔者结合多年的教学经验, Friction is the focus and difficulty of high school physics study. It is also a hot spot of college entrance examination over the years. It is often associated with the balance of forces, Newton’s laws of motion, and mechanical energy. When students learn friction, they generally feel more difficult because of the “complexity” of frictional conditions, the “hiddenness” of direction and the “diversity” of size. The author combines many years of teaching experience.