1) PULLEY 2) Pulley or lever 
A simple machine is a non-powered 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 (also called leverage) to multiply force. Usually the term refers to the six classical simple machines which were defined by Renaissance scientists: A simpl...
A type of machine that needs only a single force to be applied in order to do work. Simple machines include: • the lever • the pulley • the inclined plane • the wedge • the screw • the wheel and axle
noun a device for overcoming resistance at one point by applying force at some other point