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受力分析是研究力学问题的关键,是高中物理的重点和难点,更是必须掌握的基本功.受力分析题目类型千变万化,笼统的说很难说清楚,但也并非全无规律可以总结,结合有代表性的习题去分析就可收到事半功倍的效果.本论文就通过对具体力学习题中受力分析,来总结其中可循的规律,帮助学生掌握常用模型,拓展受力分析题型解析思路.一、物体受力分析基础知识物体受力分析即解析物体的受力情况,要牢记两个前提:一是能准确找出所有的力及其方向,二是能做出正确的正交
Stress analysis is the key to the study of mechanical problems, and it is the focus and difficulty of high school physics. It is a basic skill that must be mastered. The type of subject analyzed is ever-changing. It is difficult to say clearly in general terms, but it is not entirely irregular and can be summed up. The analysis of representative exercises can get a multiplier effect. This paper analyzes the forces involved in the specific force learning problems to summarize the rules that can be followed, help students grasp the common models, and expand the analytical analysis of force analysis questions. First, the force analysis of the basic knowledge of the object Force analysis is to analyze the force of the object, it is necessary to keep in mind two conditions: First, can accurately identify all the forces and directions, and second, can make the correct orthogonal