Which component is NOT part of a lever?

Levers are simple machines that consist of several key components. A lever typically includes a fulcrum, which is the pivot point around which the lever rotates, an effort arm, which is the distance from the fulcrum to the point where effort is applied, and a resistance arm, which is the distance from the fulcrum to where the load or resistance is located.

The term "acceleration arm" is not a recognized component of a lever. Instead, it seems to be a mix-up with standard lever terminology. In mechanics, while objects in motion can indeed experience acceleration, this concept does not pertain specifically to the structure of a lever. The essential components—fulcrum, effort arm, and resistance arm—are critical to understanding how lever systems operate in terms of balance and mechanical advantage. This knowledge is foundational in various applications, from simple tools to complex machines.