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在分析物体的受力情况时,静摩擦力是一个经常出现的因素,而正确认识静摩擦力的产生条件、分析静摩擦力的方向以及计算静摩擦力的大小又是教学中的一个难点。下面就中学物理教学中如何讲好“静摩擦力”这一概念。介绍一些个人的体会。一、静摩擦力的产生条件静摩擦力出现在两个处于相对静止状态、而又具有相对运动趋势的物体之间。这里需要强调的是“相对运动趋势”这个条件。不是任何两个处于静止状态的物体之间都存
When analyzing the force of an object, the static friction force is a frequently occurring factor. It is a difficult point in teaching to correctly understand the conditions of static friction, analyze the direction of static friction, and calculate the magnitude of static friction. Here’s how to talk about the concept of “static friction” in middle school physics teaching. Introduce some personal experiences. First, the conditions for the production of static friction The static friction occurs between two objects that are in a relatively stationary state and have a relative movement tendency. What needs to be emphasized here is the condition of “relative movement trend”. Not between two objects in a static state