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两个物体通过摩擦力、弹力、场力相互作用发生相对运动,是常见的物理情景.求解这类问题的关键和难点,往往是求两个物体的相对位移.本文总结了相对位移的四种求法,供读者参考.
The relative motion of two objects through friction, elastic force and field force interaction is a common physical situation. The key and difficult problem in solving such problems is often to find the relative displacement of two objects. This paper summarizes the four kinds of relative displacements. Seek law for readers’ reference.