“物块一木板”模型涉及题型广泛,求解方法灵活,判断物块和木板是否发生相对滑动往往是这类题目的难点和关键.本文分析了发生相对滑动的基本条件,提出了判断相对滑动的假设判断法,归纳了该方法的操作步骤,实例列举了该方法的具体应用。 “The model of a piece of wood ” model involves a wide range of questions, flexible solution method to determine the relative sliding of blocks and wood are often the crux of the problem.This paper analyzes the basic conditions for the occurrence of relative slippage, The relative sliding judgment method sums up the operation steps of the method. The examples illustrate the application of this method.