2.如图1所示a与b两个物体用轻绳相连后跨过无�擦的定�轮a物体在水平面上q位置时处于静止状态若将a物体移到p位置仍然能够处于静止 Template




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tomski2.如图1所示a与b两个物体用轻绳相连后跨过无�擦的定�轮a物体在水平面上q位置时处于静止状态若将a物体移到p位置仍然能够处于静止 coloring