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   ocr: What IS a pulley? A pulley is a lifting device. A simple pulley is made up of a wheel with a groove that a rope can run through. One end of the rope is attached to the load and force is applied at the other end to lift the load. PULLEY. FORCE USED TO LIFT THE LOAD LOAD Aj pulley is useful because it changes the direction of the force. Itis easier to pull downward, with your weight helping you, than it is to pull upward. In the island pinball game, a simple pulley system is used to operate the flippers. Pulling on one end of the rope lifts the flipper at the other end. This then pushes the pinb ...