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 .
Charles Lever clergyman. Lever and Boyle earned pocket-money singing ballads of their own composing in the streets of Dublin and played many other pranks which Lever embellished in the novels "O'Malley", "Con Cregan" and "Lord Kilgobbin". Before seriously embarking upon his medical studies, Lever visited Canada as an unqualified surgeon on an emigrant ship, and has drawn upon some of his experiences in "Con Cregan", "Arthur O'Leary" and "Roland Cashel". Arriving in Canada, he journeyed into the backwoods, where he was affiliated to a tribe of Native Americans but had to flee because his life was in danger, as later his character