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平衡条件有两个:一是共点力作用下物体的平衡,其条件为F合=0。二是有固定转动轴物体的平衡,其条件为M合=0。平衡条件的应用是高中力学中的一个重点内容,也是一个难点内容。由于它综合了力的分析、隔离法等重要内容,故思维技巧较高、解题方法多样,是培养学生综合能力与解题能力的极好素材。纵观中学物理教学中的各种研究方法,在"平衡
There are two equilibrium conditions: First, the total force under the balance of objects, the conditions for the F = 0. Second, there is a fixed axis of rotation of the balance, the conditions for the M = 0. The application of equilibrium conditions is a key content of high school mechanics, but also a difficult content. Because of its comprehensive analysis of force, isolation law and other important content, so thinking skills are higher, a variety of problem-solving methods, is to develop an excellent comprehensive ability and problem solving skills of students. Looking at all kinds of research methods in secondary school physics teaching, in the balance