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A movable pulley is a pulley where when you transfer a heavy object, the drum moves with it. There is no alter in the path of the force you require to apply, but the load will “come to feel” lighter than it actually is. For example, if you might be hauling a large hay bale up the barn’s attic, a moveable pulley will make the load really feel a whole lot lighter, even even though you happen to be pulling in the very same direction.
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