question: What do we call a simple machine that consists of a rope and grooved wheel?
distractor3: pedal
distractor1: axle
distractor2: lever
correct_answer: pulley
support: A pulley is a simple machine that consists of a rope and grooved wheel. Single pulleys may be fixed or moveable. Single and moveable pulleys may be combined in a compound pulley. The ideal mechanical advantage of a pulley or compound pulley is always equal to or greater than 1. Fixed pulleys and some compound pulleys also change the direction of the input force.