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摩擦力是中学物理的一个重点,也是一个难点.学生如果不能深刻把握摩擦力的本质,将影响到对题目的正确理解,可能导致错误结果的出现.本文从摩擦力概念的内涵以及对摩擦力的作用效果、摩擦力做功的外延通过具体的实例分析,进一步揭示摩擦力的本质属性,以求对摩擦力有全面深刻地理解.一、由概念的内涵解读摩擦力互相接触的两个物体,当它们有相对运动或有相对运动趋势时,就会在接触面上产生阻碍物体间相对运动的力,这种阻碍相对运动的作用力称为摩擦力.摩擦力的产生需同时具备以
Friction is a focal point of secondary physics, but also a difficult point.If you can not profoundly grasp the essence of friction, students will affect the correct understanding of the subject, may lead to the wrong result.This article from the connotation of the concept of friction and the friction , The extension of friction work through the concrete example analysis further reveals the essential properties of friction in order to have a comprehensive and profound understanding of the friction.Firstly, from the connotation of concept, two objects with frictional contact with each other are interpreted, When they have a relative movement or a relative trend of movement, there will be produced in the contact surface obstruct the relative movement of objects between the force, the impediment to the relative movement of the force called friction.Friction generated by the need to have both