In a first class lever, where is the axis located?

In a first class lever, the axis is located between the force and the resistance. This configuration allows for a mechanical advantage, which is the primary characteristic of first class levers. In a first class lever, such as a seesaw or a pair of scissors, the fulcrum (or axis) is positioned centrally, enabling both the effort (force) applied and the load (resistance) to be on either side of the fulcrum.

Having the axis between the force and the resistance means that a smaller force can move a larger load, depending on the distances from the axis to the force and the load. This relationship illustrates the principle of leverage, where the distance from the fulcrum affects the amount of force needed to lift or move an object.

In contrast, the other options suggest different configurations that do not accurately represent a first class lever arrangement. Thus, the correct placement of the axis in this scenario is critical for understanding how first class levers function in terms of mechanics and physical principles.