乘电梯上楼的人耗费了电力,但制造了势能这种势能既可转换,也可贮存电梯就是势能转换器节能的电梯就是要把势能贮存、利用起来跷跷板:势能的转换在一种跷跷板杂技表演中,我们可以看到,一位身材比较娇小的女演员站在跷跷板的一端,一位身材壮硕的男演员从高处跳下,砸向跷跷板的另一端,女演员被高高弹起。为 Take the elevator upstairs people consumed electricity, but to create the potential of this potential energy can be converted, but also store the elevator energy converter is energy-saving elevator is to store the potential energy, the use of seesaw: the conversion of potential energy in a seesaw acrobatics During the performance, we can see that one of the more petite actresses stood at one end of the see-saw. A tall figure jumped from a height to the other end of the seesaw, and the actress was bounced high . for