如图所示物体放在轻弹簧上沿竖直方�在ab间做简谐运动.在物体沿dc方�由d点运动到c点的过程中弹簧的弹性势能减�了30j物体的重力 Template




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tomski如图所示物体放在轻弹簧上沿竖直方�在ab间做简谐运动.在物体沿dc方�由d点运动到c点的过程中弹簧的弹性势能减�了30j物体的重力 coloring