Lever resistance (or load). It is common to call the input force "the effort" and the output force "the load" or "the resistance." This allows the identification of three classes of levers by the relative locations of the fulcrum, the resistance and the effort: These cases are described by the mnemonic "fre 123" where the fulcrum is in the middle for the 1st class lever, the "r"esistance is in the middle for the 2nd class lever, and the effort is in the middle for the 3rd class lever. The lever is a movable bar that pivots on a fulcrum attached to
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