Which type of lever has the load between the effort and the fulcrum?

A second-class lever is defined by having the load positioned between the effort (the force applied) and the fulcrum (the pivot point). This configuration allows for a mechanical advantage, meaning that less effort is required to lift heavier loads.

For example, when using a wheelbarrow, the wheel serves as the fulcrum, the load of the wheelbarrow is positioned in the middle, and the effort is applied at the handles to lift and move the load. The arrangement allows the user to lift heavier objects with greater efficiency, a key characteristic of second-class levers.

In contrast, first-class levers have the fulcrum positioned between the load and the effort, while third-class levers have the effort applied between the load and the fulcrum. The term "fourth-class lever" is not standard in traditional physics classifications regarding levers.