What type of lever has the fulcrum located between the effort and the resistance?

A lever is a simple machine that helps lift or move loads with the application of a force (effort). In the case of a first class lever, the fulcrum is positioned between the effort and the load (resistance). This arrangement allows for the force applied at one end to overcome the resistance at the other end, effectively enabling mechanical advantage.

An example of a first class lever is a seesaw, where the fulcrum is in the center, and the effort and resistance are on opposite sides. The location of the fulcrum affects the balance and the amount of effort required to lift the load, illustrating how first class levers can amplify force depending on the distance from the fulcrum.

In contrast, in a second class lever, the load is between the fulcrum and the effort. This arrangement provides a different mechanical advantage, typically allowing for less effort to move a larger load but not fitting the description in the question. A third class lever, which also does not meet the criteria, has the effort applied between the fulcrum and the load, facilitating faster movement but requiring more effort to lift the load. The mention of a fourth class lever may cause some confusion, as there is no widely recognized classification beyond the