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在高中物理教学中,关于向心力的公式的得出是个难点。该公式的理论推导过程对学生来说过于抽象,不易理解,而开展实验研究又十分困难。历年来的高中物理教材所采用的“向心力实验演示仪”也仅仅是半定量的,它通过皮带传动改变两轮的转速,让两轮上的钢球同时做圆周运动,然后通过连动装置使
In high school physics teaching, the formula for centripetal force is a difficult one. The formula of the theoretical derivation process is too abstract for students, not easy to understand, and the experimental study is very difficult. Over the years used in high school physics textbooks “centripetal force experiment demo ” is only a semi-quantitative, it is through the belt drive to change the speed of the two wheels so that the two rounds of the ball at the same time to do circular motion, and then through the linkage Device to make