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三种性质的力、物体的受力分析在高考中几乎年年有题,其中弹力、摩擦力属高考热点.考题中重在考查学生对这类知识的分析、推理能力及数学运算能力.这部分知识经常与牛顿定律、功和能、气体的性质、电磁学等内容综合考查,以难度较大的题目出现.在学习三种力的知识时,注意正确认识如下几点,将起到事半功倍的作用.
The force analysis of three kinds of forces and objects has almost the same problems every year in the college entrance examination. Among them, the elasticity and friction are the hotspots of the college entrance examination. The examination focuses on the analysis of students’ knowledge of this type of knowledge, their reasoning ability, and their mathematical ability. Part of the knowledge is often combined with Newton’s law, work and energy, gas properties, electromagnetics, etc., and it is difficult to see problems. When learning three kinds of knowledge, it is more effective to pay attention to understanding the following points correctly. The effect of.