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1.探究弹性势能可以转化为动能用一只手张橡皮筋的两端 ,用另一只手捏住夹在橡皮筋之间的橡皮 ,把橡皮筋拉长 ,松手后 ,橡皮筋把橡皮弹出 ,说明橡皮筋的弹性势能转化为橡皮的动能。2 .探究重力势能可以转化为动能让一橡皮筋自然下垂 ,把一块橡皮栓在橡皮筋的下端 ,松手后 ,可以
1. Explore the potential energy of elasticity can be transformed into kinetic energy. Use one hand to stretch the ends of the rubber band. Use the other hand to pinch the rubber pinched between the rubber bands, stretch the rubber band, and let the rubber band eject the rubber band. , indicating that the elastic potential of the rubber band translates into the kinetic energy of the eraser. 2. Explore the potential energy of gravity can be converted into kinetic energy so that a rubber band naturally droops.