Hi! I try to design a pulley system use to lift a box weight 1/2 lbs off the ground 2 inches then lower it down. The box need to be really really stable, it can't move in any directions when being moved up and down. I have pulley, rope and a motor. What else do I need? Can someone tell me how to keep the box really stable? Thank you very much.
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Pulley and Rope
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