在物理学中,弹力与静摩擦力一直被视为性质不同的力。其实二者的区别并非如人们想象的那么大。首先,从本质上讲,静摩擦力和弹力都属于接触力,它们都是固态物体的分子之间发生相互作用的表现。然而固态物体的接触面上,不仅发生相互作用的分子数目十分庞大,而且其间还因位置差异 In physics, elasticity and static friction have always been regarded as forces of different qualities. In fact, the difference between the two is not as big as people think. First and foremost, both static friction and elastic force belong to the contact force, and they are all manifestations of the interactions between the molecules of a solid object. However, the contact surface of solid objects, not only the number of interacting molecules is very large, but also due to the location during the difference