Pulleys
Example a pulley is a wheel and axle that is designed to support movement of a cable or a belt along its circumference.
Example pulleys are used in variety of ways to lift loads apply force and transmit power. A pulley is called a sheave or drum and may have a groove between to flanges Around its circumference. The drive of a pulley system can be a rope.
Example a pulley is one of the six simple machines used to lift weights they are a simple to form a block and tackle in order to provide mechanical advantage. To apply large force.
