一、巧用假设法例1 两个质量都是1 kg的木块叠放在水平地面如图1,m1、m2间的最大静摩擦力是7N,m2与地面间的最大静摩擦力是3N,m1、m2间的动摩擦因数μ1=0.5,m2与地面间的动摩擦因数μ2=O.1.当作用在m1上的水平作用力F=1ON,试求m1、m2的加速度分别是多大? 解析:一种典型错解是:因作用在m1上的牵引力F大于m1、m2间的最大静摩擦力,故m1、m2 First, the use of hypothetical law 1 two masses are 1 kg of wood stacked on the level of the ground as shown in Figure 1, m1, m2 between the maximum static friction is 7N, m2 and the maximum static friction between the ground is 3N, m1, The dynamic friction coefficient between m2 is μ1=0.5, and the dynamic friction coefficient between m2 and the ground is μ2=O.1. When the horizontal force acting on m1 is F=1ON, what is the acceleration of m1 and m2? The typical wrong solution is: Because the traction force F acting on m1 is greater than the maximum static friction force between m1 and m2, so m1, m2