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