PULLEY

Mrs. Comer

Simple Machines

Simple tools are used everyday to help make work easier. A machine is a device that does work. Each tool is designed to do a specific job. There are six simple machines: Inclined plane, wedge, screw, lever, wheel and axel and pulley.


Sometimes machines can be used together to make work easier. For example, a crane uses a pulley and a lever to make the work of lifting a heavy load easier.

Big image