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The pulley in which it’s block is not fixed but it carries a load is known as movable pulley. In a movable pulley, an extensible string is tied around the groove where one end of it is fixed to fixed support while the other end of it is always kept free so that the efforts can be applied. As the effort is applied on it, the block which is with the loads moves upward altogether. In the mechanism of a movable pulley, wheels carry the load instead of ropes. In this type of pulley, a little amount of manual work is required.