A lever is a(n) machine. These machines make it easier to do . The lever has a rigid bar that rests on a pivot point called the . The side of the bar on which the lever produces an output force is called the . In a(n) lever, the fulcrum lies between the force and the output force. One example is a(n) being used to pull a nail. Second-class levers do not change the of the effort force. Third-class levers the distance of your effort. This allows fishers to a lure a long distance. A machine's tells the number of times it increases your effort.