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Set or Course 1 pulleys have a fastened shaft. That is, the shaft is “fixed” or anchored in place. A mounted pulley is a force used to adjust the direction of the rope (referred to as a belt since it makes 1 change). Mounted pulleys have mechanical positive aspects of set pulleys. Lively pulleys or 2-stage pulleys have free of charge shafts. That is, the axis can go “freely” in space. Shifting pulleys are utilized to change forces. Lively pulleys have the mechanical benefit of two pulleys. That is, if one particular stop of the rope is stationary, pulling the other stop of the rope will exert two times the pressure on the object hooked up to the pulley. A composite pulley block is a mix of a fixed pulley block and a movable pulley block. Blocks – Blocks are composite pulleys exactly where a number of pulleys are mounted on each axle, additional introducing to the mechanical advantage. Pulleys can modify the course of the power.