如图6所示绳的一端拴一小球另一端悬于固定点o点处用手把小球拉到a点后松开手小球在�动过程中1小球从a运动到b点在 点的重力势能 Template




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tomski如图6所示绳的一端拴一小球另一端悬于固定点o点处用手把小球拉到a点后松开手小球在�动过程中1小球从a运动到b点在 点的重力势能 coloring