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力和运动所研究的物理现象、物理规律与生活紧密相关,也是初中物理的重点内容之一,近年来中考试卷中相关知识点出现的几率较多,如二力平衡及平衡力的判断、惯性及惯性现象的解释、力与运动的关系及应用以及牛顿第一定律的实验探究等都是考试的热点内容。一、二力平衡物体在受到几个力的作用时,如果保持静止状态或匀速直线运动状态,就说该物体处于平衡状态。
The physical phenomena and physical laws studied by force and exercise are closely related to life and are also one of the key contents of junior middle school physics. In recent years, there is a high probability that related knowledge points appear in secondary examination papers, such as the judgment of balance of two forces and balance, inertia And the explanation of inertial phenomena, the relationship between force and movement and the application as well as the Newton’s first law of experimental exploration are all hot topics of the exam. One, two force balance The object in the role of several forces, if you remain stationary or uniform linear motion state, said that the object is in balance.