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所谓相对分析法就是指当两个物体都发生相同的变化,但一物体变化较大,另一物体变化小时,则只考虑变化大的,而变化小的可视为不变而忽略不计.当两个物体变化情况相反时,则只考虑其中一个物体;若同一物体在不同条件下发生相反的变化,则只考虑其中一种变化.当在研究的问题中出现二个相互联系又相互影响的现象,一个很明显,或一个是我们主要研究的对象,则只考虑明显的,主要的对象.相对分析法在研究物理有关问题中应用很广.如我们研究动滑轮省力问题时,就只考虑作
The so-called relative analysis method means that when two objects all undergo the same change, but one object changes greatly, and another object changes hourly, only large changes are considered, while small changes can be regarded as constant and ignored. When two objects change in the opposite situation, only one of them is considered; if the same object undergoes the opposite change under different conditions, only one of the changes is considered. When there are two interrelated and influential effects in the research question. Phenomenon, one obvious, or one is our main research object, only consider the obvious, the main object. Relative analysis method is widely used in the study of physics related issues. If we study the problem of moving pulleys and labor, we only consider