Compound lever the force of pushing back the stick to the levers and they rub against the wheels, using friction to slow and eventually stop the train. These are everyday applications of this mechanism. A piano key is a compound lever of the first-class, since the fulcrum is between the weight to be moved and the power. The purpose of this lever is to translate a small movement (depression of the key) into a larger and fast movement of the hammer on the strings. The quality of the resulting tone depends on whether the final speed is brought about by gradual or
Leslie Lever, Baron Lever Leslie Lever, Baron Lever Leslie Maurice Lever, Baron Lever, GCSG (29 April 1905 – 26 July 1977) was a British Labour politician. He was Member of Parliament for Manchester Ardwick from 1950 to 1970, when he retired. Subsequently, he was given a life peerage as Baron Lever, of Ardwick in the City of Manchester on 10 July 1975. He was educated at Manchester Grammar School and read Law at Leeds University. He was a solicitor and poor man's lawyer between 1928 and the advent of Legal Aid in 1948, funding his impecunious clients' cases out of his own pocket if