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
Great Lever Great Lever Great Lever is mainly a residential suburb of Bolton in Greater Manchester, England. Historically within Lancashire, it is about south of Bolton town centre and the same distance north of Farnworth. Great Lever has many shops and services serving the local community including a post office, butcher's, chemist and a GP surgery. The district has several nursing homes and is served by frequent bus routes running to Bolton town centre, Farnworth and the Royal Bolton Hospital. The ward population taken at the 2011 census was 14,467. The parish church is St. Michael (with St Bartholomew). Currently under renovation