In a third-class lever, where is the effort located relative to the load and fulcrum?

• A. Between load and fulcrum
• B. Between fulcrum and load
• C. At the load
• D. At the fulcrum

Answer: (A)

In this lever type, the force you apply sits between the pivot (fulcrum) and the thing you’re lifting (the load). That means the effort arm is shorter than the load arm, so you must push harder than the load but you get to move the load farther or faster for a given rotation. A good mental image is a pair of tweezers or your forearm when you lift with your hand: the muscle (effort) acts between the elbow (fulcrum) and the hand (load). So the correct description is that the effort is located between the fulcrum and the load.