Angular momentum and the law of angular momentum are key and difficult points in college physics teaching. It introduces a self-made portable angular momentum demonstration instrument that integrates qualitative demonstration of the vectorization of angular momentum,qualitative demonstration and quantitative verification of the law of angular momentum conservation,and explores its application in classroom teaching. This teaching aid mainly consists of rotating discs,ball piercing discs,electric motors,variable speed controllers and other parts. The overall structure of teaching aids is compact,easy to carry and operate,and the phenomenon is very obvious. It can visualize the vectorization of angular momentum and the law of angular momentum conservation,which is conducive to breaking through the teaching difficulties of concepts and laws related to angular momentum and achieving efficient classroom generation.
关键词
角动量演示仪/矢量性/角动量守恒定律/课堂教学
Key words
angular momentum demonstration instrument/vectorality/law of angular momentum conservation/classroom teaching
维普
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