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在初中物理演示实验中,动能、势能相互转化演示实验只有滚摆实验,但它只能演示动能与重力势能的相互转化,而不能演示动能与弹性势能的相互转化.动能与弹性势能的相互转化既是教学重点,而且较为抽象,是学生难以接受的难点.为此,笔者将滚摆实验做了如下改进,实现了既可以演示动能与重力势能的相互转化又可以演示动能与弹性势能的相互转化的功能.1动能、弹性势能相互转化演示实验教具的制作1.1实验原理
In the junior middle school physics experiment, kinetic energy and potential energy mutual transformation demonstration experiment is only a rolling experiment, but it can only demonstrate the mutual transformation of kinetic energy and gravitational potential energy, but can not demonstrate the mutual transformation of kinetic energy and elastic potential energy. Which is not only the focus of teaching but also the more abstract, difficult for students to accept.To this end, the author made the following improvements to the roll-off experiment to realize the mutual transformation of kinetic energy and gravity potential energy and the conversion of kinetic energy and elastic energy potential Of the function .1 kinetic energy, elastic potential energy conversion demonstration experiment teaching aids 1.1 experimental principle