A grooved wheel, also known as a PULLEY or sheave, is a wheel with a groove along its circumference that is used to guide a rope or cable. It is typically used in mechanical systems to transmit power from one location to another. The grooved wheel is usually made of metal and is attached to a shaft or axle. The rope or cable is then threaded through the groove, allowing it to be pulled or pushed in order to move the wheel. PULLEY and sheave are two common terms used to refer to the same type of grooved wheel.