Third-Class Levers in the Human Body. A lever is a type of simple machine where a rigid arm is arranged around a fixed point or fulcrum. ... In a third-class lever, the input forceis greater than the output force but the output load is able to move farther.the Force is between the Load and the Fulcrum. If the Force is closer to the Load, it would be easier to lift and a mechanical advantage. Examples are shovels, fishing rods, human arms and legs, tweezers, and ice tongs. ... An arm is another example of a third class lever.