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解物理问题时 ,正确选取研究对象是快捷解好物理题的前提。微元思想就是从某一物理量、物理状态或物理过程中选取一个足够小的单元———微元作为研究对象的研究方法。微元的选取是应用微元思想解题的关键。本文通过举例谈谈用微元思想处理两类问题。1 环类问题环类问题 ,其主
When solving physics problems, the correct selection of research objects is the premise to quickly solve physical problems. The micro-element thought is to select a small enough element from a certain physical quantity, physical state, or physical process—the research method of micro-element as the research object. The selection of microelements is the key to applying microelements to solve problems. This article discusses the use of micro-elements to deal with two types of problems through examples. 1 ring problem, the ring problem, its main