论文部分内容阅读
摩擦力教学是高中物理的重点,也是难点内容。不少学生存在模糊不清甚至错误的认识。现将主要错误认识总结如下:一、静摩擦力作用的物体一定静止,动摩擦力作用的物体一定运动物体受到的摩擦力是否为静摩擦力,与物体的状态没有关系,关键是看物体与其接触的物体之间是否相对静止。受静摩擦力作用的物体可能是静止的,也可能是运动的。因为,静摩擦力是出现在相对静止的两个物体之间,相对静止的两个物体可以同时静止,
Friction teaching is the focus of high school physics, but also difficult content. Many students have vague or even wrong understanding. Now the main mistakes are summarized as follows: First, the role of static friction objects must be stationary, the role of dynamic friction objects Some friction objects subject to friction is static friction, and the object has nothing to do with the state, the key is to see the objects in contact with objects Is it relatively still? Objects subject to static friction may be stationary or moving. Because static friction occurs between two relatively stationary objects, two relatively stationary objects can be stationary at the same time,