Compound lever Compound lever The compound lever is a simple machine operating on the premise that the resistance from one lever in a system of levers will act as power for the next, and thus the applied force will be amplified from one lever to the next (as long as the mechanical advantage for each lever is greater than one). Almost all scales use some sort of compound lever to work. Other examples include nail clippers and piano keys. A lever arm uses the fulcrum to lift the load using and intensifying an applied force. In practice, conditions may prevent the use
Darcy Lever Darcy Lever Darcy Lever is an area of the Metropolitan Borough of Bolton in Greater Manchester, England. Historically part of Lancashire, the area lies on the B6209 (Radcliffe Road), between Bolton and Little Lever. Its history dates to the time of William the Conqueror when it was part of the Salford Hundred given to Roger of Poitou for his participation in the Norman conquest of England. Lever was recorded as Parua Lefre in 1212, from the Latin, parva meaning little and laefre, which is derived from the Old English meaning 'place where the rushes grow'. The name was recorded in