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由一道题的错解到功的位移的再探骊

2016-12-10柯尧

物理教学探讨 2016年9期
关键词:易错标识码分类号

柯尧

摘 要:高中物理中力对物体做功的位移取值是一个常见的易错点。本文通过对一道有关功率的易错题进行深入剖析,论证了功的位移为力作用质元的位移,并通过三道例题讲述了三类功的计算。

关键词:功;受力质元;位移

中图分类号:G633.7 文献标识码:A 文章编号:1003-6148(2016)9-0052-2

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