Mounted or Course 1 pulleys have a set shaft. That is, the shaft is “mounted” or anchored in location. A fastened pulley is a pressure used to change the route of the rope (called a belt because it helps make 1 turn). Mounted pulleys have mechanical positive aspects of fixed pulleys. Active pulleys or 2-stage pulleys have totally free shafts. That is, the axis can move “freely” in space. Transferring pulleys are utilized to change forces. Active pulleys have the mechanical edge of two pulleys. That is, if one end of the rope is stationary, pulling the other end of the rope will exert 2 times the force on the object connected to the pulley. A composite pulley block is a mixture of a mounted pulley block and a movable pulley block. Blocks – Blocks are composite pulleys where a number of pulleys are mounted on each and every axle, even more adding to the mechanical gain. Pulleys can change the path of the drive.