A third-class lever is used to increase distance traveled by an object in the same direction as the force applied. The fulcrum is at one end of the lever, the object at the other, and the force is applied between them. This lever does not impart a mechanical advantage as the effort force must be greater than the load but does impart extra speed to the load. Examples of third-class levers are shovels and tweezers.
The advantage of using a third-class lever is that it increases:
the speed of the load |
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the force applied to the load |
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the distance traveled by the load |
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the mechanical advantage of the lever |