Lever the power out, and the ratio of output to input force is given by the ratio of the distances from the fulcrum to the points of application of these forces. This is known as the "law of the lever." The mechanical advantage of a lever can be determined by considering the balance of moments or torque, "T", about the fulcrum. where F is the input force to the lever and F is the output force. The distances "a" and "b" are the perpendicular distances between the forces and the fulcrum. Since the moments of torque must be balanced, formula_3 .
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