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摩擦力既是中学物理教学的重点,也是学生理解的难点,又是历年高考的热点。按《考试说明》规定:静摩擦,最大静摩擦力,滑动摩擦,滑动摩擦定律属B级考查要求。再仔细综览有关摩擦力内容的试题,一般都渗透物体受力分析,联系牛顿运动定律、动能定理、动量定理等其它知识点,实际试题的难度都达B~+至C级要求,导致应试失误率很高。但认真剖析,不难发现高考中的摩擦力问题的采点落实如下几个方面:
Friction is not only the key point of middle school physics teaching, but also a difficult point for students to understand. It is also a hot spot of the college entrance examination. According to the “Exam Description”: static friction, maximum static friction, sliding friction, sliding friction law is a B-level examination requirements. A closer examination of the questions relating to the content of friction generally applies the force analysis of the infiltrated objects and links Newton’s laws of motion, kinetic energy theorems, momentum theorem, and other knowledge points. The difficulty of practical questions is up to the B~+ to C level requirements, resulting in the examination The turnover rate is high. However, careful analysis, it is not difficult to find the points of friction in the college entrance examination to implement the following aspects: