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物理解题方法的确定依托于将陌生的物理情境转化成熟知的物理模型,将复杂的物理过程简单化、将未知的物理关系具体化.“退中求进”的物理思想方法正是完成上述目的的有效方法之一.此物理思维方法强调一个“退”字,即退到能看清问题的本质时、退到能够掌握问题特点时、退到能够提出解决问题的方案时.表面上是退,实则是进,这就是“退中求进”的物理方法.一、由正向退向逆向由已知条件直接考虑如何求解未知量,我们称之为正向思维,但在正向思维受阻时,可以退到逆向思维进行分析.例1如图1甲所示,一充电的平行板电容器,板
The method of physical problem solving relies on the transformation of unfamiliar physical situations into familiar physical models, simplifying complex physical processes and materializing unknown physical relationships. “The physical thinking method of” retreat and seek “is exactly One of the effective ways to accomplish this is to emphasize a ”retreat“ word, ie, when it comes back to the essence of the problem and retreats to a solution that can solve the problem . On the surface is to retreat, but in reality is to enter, and this is the physical method of ”retreat into the middle." First, the reverse from the positive direction Given the known conditions directly consider how to solve the unknown, we call positive thinking , But in the forward thinking is blocked, you can retreat to reverse thinking for analysis.Example 1 As shown in Figure 1 A, a parallel plate capacitor charging, board