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计算机械效率的衍生公式有很多,不少同学面对众多公式,有一种眼花缭乱的感觉,下面笔者帮助同学们归纳一下常用的计算机械效率公式究竟有哪些,并通过实例说明如何根据实际情况选择使用.衍生公式1:ηW有用/W总=W有用/W有用+W额外
There are many derivation formulas for calculating mechanical efficiency. Many students face many kinds of formulas and have a dazzling feeling. The following author helps students to summarize what commonly used formulas for calculating mechanical efficiency and how to use them according to actual situations . Derived Formula 1: ηW useful / W total = W useful / W useful + W extra