The Inclined Plane
The inclined plane is a plank or a piece of wood put to an angle and you have to push up heavy loads with alot of force. The steeper the ramp is the more effort is required. With a steeper ramp you have to push harder-but for a shorter distance. The ramp makes life easier not by altering the amount of work needed
A pulley is a wheel on an axe that is designed to support movement and change of direction of a cable or belt along its circumference. Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power. In nautical contexts, the assembly of wheel, axle, and supporting shell is referred to as a "block."