掌握最基本的物理常识和理论知识是基础工程,要想学以致用,解答物理疑难问题,还需要学生对所学的知识能灵活运用,多方把握,并且要学会善于总结和反思,掌握一些解答问题的技巧和方法.等效法作为一种问题的转化,可以把物理试题中的相关因素进行有关的嫁接和转化,一定程度上实现了解答过程的最简化.例1现有一只老鼠从窝里跑出来,假设这只老鼠跑的速 Grasp the most basic physical and theoretical knowledge is the basic engineering, in order to learn practical purposes, to solve physical problems, but also the students need to be able to use the knowledge of flexible use, multi-grasp, and learn to be good at summarizing and reflection, master some answers Problem techniques and methods.Equivalence as a problem transformation, the physical problems in the relevant factors can be related to the grafting and transformation, to some extent, to achieve the most simplified answer process.Example 1 There is a mouse from the nest Run out, assuming the rat is running fast