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系统机械能守恒的条件是什么
更新时间: 2020-09-22 00:00:00  

对某一物体,若只有重力做功,其他力不做功的条件下,则该物体的机械能守恒;对某一系统,物体间只有动能和势能的转化,系统跟外界没有发生机械能的传递,也没有转化成其他形式的能(如内能)的条件下,则系统的机械能守恒。

关键词: 系统 机械能 守恒 条件 什么

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