simple machine
A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage to multiply force.Simple Without simple machines you might not be able to move something really heavy.simple machine, any of several devices with few or no moving parts that are used to modify motion and the magnitude of a force in order to perform work. simple machine help us everytime simpke machine make our work easier there are different types of simple machine . Thank you