发生弹性形变的物体的各部分之间,由于有弹力的相互作用,也具有势能,这种势能叫做弹性势能(elastic potential energy)。同一弹性物体在一定范围内形变越大,具有的弹性势能就越多,反之,则越小。
问题是怎样 才能让弹簧的弹性势能不减小?
The problem is how to make a spring elastic potential energy is not reduced?
或者说怎样才能让弹簧的弹性势能保持原来的大小不变?
Or how to make a spring elastic potential energy to maintain the original size of the change?
因此,该物块的重力势能的减少,等于该弹簧的弹性势能的增加。
Hence, the loss of gravitational potential energy of the block equals the gain of elastic potential energy of the spring.
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