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浅谈静摩擦力方向的判定田云芬（云南省大理工业学校６７１０００）受力分析是力学的重要内容，正确的受力分析是解题的关键．而绝大多数学生虽然对静摩擦力的概念能够理解，但碰到具体问题时，却不能正确判断静摩擦力的方向，这给解题带来困难．下面谈一谈分析静摩擦力方...
On the determination of the direction of static friction force Tian Yunfen (Dali Industry School, Yunnan Province, 671000) The force analysis is an important part of mechanics. Correct force analysis is the key to problem solving. While most students understand the concept of static friction, they cannot correctly determine the direction of static friction when they encounter specific problems. This makes it difficult to solve problems. Let’s talk about the analysis of static friction...