Fixed or Class 1 pulleys have a mounted shaft. That is, the shaft is “set” or anchored in area. A fixed pulley is a force used to modify the course of the rope (known as a belt due to the fact it can make 1 switch). Set pulleys have mechanical benefits of set pulleys. Lively pulleys or 2-stage pulleys have free shafts. That is, the axis can transfer “freely” in area. Moving pulleys are utilized to convert forces. Lively pulleys have the mechanical edge of two pulleys. That is, if one end of the rope is stationary, pulling the other conclude of the rope will exert twice the drive on the item attached 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 the place a number of pulleys are mounted on each axle, even more incorporating to the mechanical benefit. Pulleys can change the direction of the drive.