物体仅在重力场中的运动是最常见、最基本的运动,但是对处在匀强电场中的带电物体而言,它的周围不仅有重力场,还有匀强电场,同时研究这两种场对物体运动的影响,问题就会变得复杂一些.此时,若能将重力场与电场合二为一,用一个全新的“复合场”(可形象称之为“等效重力场”)来代替,不仅能得到“柳暗花明”的效果,同时也是一种思想的体现.那么,如何实现这一思想方法呢?一、概念的全面类比为了方便后续处理方法的迁移,必须首先搞清“等效重力 Objects moving only in the gravitational field are the most common and basic motions. However, for a charged object in a uniform electric field, there are not only gravitational field and uniform electric field around the object, but also the two The effect of the field on the movement of the object will make the problem more complicated, and at this time, if we can combine the gravitational field with the electric field, we can use a completely new ”composite field“ Gravitational field ”), not only can it get the effect of“ superficial beauty ”, but also is an embodiment of the thought.Then, how to realize this method of thinking? First, the concept of a comprehensive analogy In order to facilitate the migration of follow-up treatment , We must first find out "equivalent gravity