Lever fulcrum to where the output force is applied (point "B"), then the lever amplifies the input force. On the other hand, if the distance "a" from the fulcrum to the input force is less than the distance "b" from the fulcrum to the output force, then the lever reduces the input force. The use of velocity in the static analysis of a lever is an application of the principle of virtual work. A lever is modeled as a rigid bar connected to a ground frame by a hinged joint called a fulcrum. The lever is operated by applying an input
Darcy Lever were several collieries in Darcy Lever, the Darcy Lever Pit, Davenport Pit, Snow Hill Pit, Victoria Pit, Top o'th'Meadows Colliery. In addition closer to Farnworth there was Fogg Pit owned by Andrew Knowles and Sons, near the Bolton and Bury Canal, which was the scene of an explosion which killed 10 miners. Darcy Lever was a township or civil parish in the ecclesiastical parish of Bolton le Moors in the Salford hundred in the historic county of Lancashire and in 1837 became part of the Bolton Poor Law Union. In 1898 Darcy Lever was incorporated into the County Borough of