论文部分内容阅读
静摩擦力方向的判断是中学物理学习的一大难点.有些学生虽说知道静摩擦力的方向与相对运动趋势的方向相反,但遇到实际问题往往又束手无策.如果突破这一难关,对学生学好力学至关重要.为此,本人在多年教学中摸索出以下几种行之有效的判断方法.
Judging the direction of static friction is a major difficulty in physics learning in middle schools. Some students know that the direction of static friction is in the opposite direction of the relative movement trend, but they often do not know how to deal with practical problems. If they overcome this difficulty, they will learn mechanics well. Important. For this reason, I have explored several effective methods of judgment in my teaching for many years.