论文部分内容阅读
学生对摩擦力的理解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角度以及对摩擦力的作用效果、摩擦力做功的外延角度来通过具体的实例分析,进一步揭示摩擦力的本质属性,以求对摩擦力有一个全面深刻的理解.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
Students’ understanding of friction is a focal point of secondary physics as well as a difficult point. If students can not grasp the essence of friction profoundly, it will affect the correct understanding of the subject and may lead to the wrong result.This paper starts with the connotation of the concept of friction Angle and the effect of friction on the friction angle of the work done by the outer angle of the specific examples to further reveal the nature of the friction properties in order to have a comprehensive and deep understanding of the friction force.First, the connotation of the concept of interpretation of friction Two objects in contact with each other force, when they have a relative movement or relative movement trend, there will be produced in the contact surface obstruct the relative movement between objects force, this resistance