如图所示被压缩的弹簧一旦放松就能将它上面的砝码举起直到砝码静止不动.在这一过程中弹簧的 弹性势 能转化为砝码的 动 能.弹簧压得越紧 Template




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tomski如图所示被压缩的弹簧一旦放松就能将它上面的砝码举起直到砝码静止不动.在这一过程中弹簧的 弹性势 能转化为砝码的 coloring