What do we call a simple machine that consists of a rope and grooved wheel?
- Correct Answer: pulley
- pedal
- axle
- lever
Explanation: 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.
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