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
Ashton Lever Ashton Lever Sir Ashton Lever FRS (5 March 1729 – 28 January 1788) was an English collector of natural objects. Lever was born in 1729 at Alkrington Hall. In 1735 Sir James Darcy Lever, his father, served as High Sheriff of Lancashire. Lever began by collecting seashells in about 1760, and gradually accumulated one of the richest private collections of natural objects, including live animals. He opened it to the public in April 1766, in Manchester, moving the museum to his family home at Alkrington Hall, near Rochdale, Lancashire, in 1771. In the same year he founded Archers' Hall, Inner