In a first-class lever, where is the fulcrum located?

In a first-class lever, where is the fulcrum located?

• A. At the end of the lever.
• B. Between effort and load.
• C. Beyond the load.
• D. On the opposite side of the fulcrum from effort.

Answer: (B)

First-class levers have the fulcrum between the effort and the load. This arrangement lets you apply force on one side to lift or move a weight on the other, with the pivot serving as the balance point. A seesaw is a familiar example, with the pivot in the middle and forces on opposite sides. So the fulcrum sits between the effort and the load. If the fulcrum were at an end or if the load or the effort were placed on the same side as the other force, you’d be describing a different lever type (second-class or third-class).

First-class levers have the fulcrum between the effort and the load. This arrangement lets you apply force on one side to lift or move a weight on the other, with the pivot serving as the balance point. A seesaw is a familiar example, with the pivot in the middle and forces on opposite sides. So the fulcrum sits between the effort and the load. If the fulcrum were at an end or if the load or the effort were placed on the same side as the other force, you’d be describing a different lever type (second-class or third-class).