Simple machines make work easier. Examples: Screw, Wheel and Axle, Wedge, Pulley, Inclined Plane, Lever Compound Machine: Two or more simple machines working together to make work easier. Examples: Wheelbarrow, Can Opener, Bicycle The tradeoff is that an object must be moved a longer distance than Inclined plane: A sloping surface, such as a ramp. Makes lifting heavy loads easier. if it .