中学物理中重力势能表达式的适用范围--由一道易错题想到的

摘要

在中学物理中，学生对重力势能的概念及其表达式的理解容易出现一些错误，笔者试图从势能表达式推导的来龙去脉及应用范围做一些阐释，以帮助学生提高这方面的认识。%In physics teaching in M iddle Schools ,the definition and expression for the gravitational potential energy of the students understand easily appears some errors ,the author tries to do some explanation from the sequence of events and the application range of potential energy expressions to help the students to improve the this aspect understanding .