👉 In the context of mechanics, a lever is an apparatus that is used to transfer force from one object to another. Levers are typically used in simple machines like a pulley or a wheel-and-rack mechanism. The term "levier" can be related to the mechanical design and operation of a lever. It refers to the part of a lever, usually made up of two shafts (the fulcrum) and one roller, which is attached to the other end of the shaft by