Lever force F at a point "A" located by the coordinate vector r on the bar. The lever then exerts an output force F at the point "B" located by r. The rotation of the lever about the fulcrum "P" is defined by the rotation angle "θ" in radians. Let the coordinate vector of the point "P" that defines the fulcrum be r, and introduce the lengths which are the distances from the fulcrum to the input point "A" and to the output point "B", respectively. Now introduce the unit vectors e and e from the fulcrum to the point "A"
Little Lever Little Lever Little Lever is a large village within the Metropolitan Borough of Bolton in Greater Manchester, England. Historically in Lancashire, it is southeast of Bolton, west of Radcliffe and west-southwest of Bury. During the 19th century the population was employed in cotton mills, paper mills, bleach works, terracotta works, a rope works and in numerous collieries. Lever is derived from the Old English "laefre", which means place where the rushes grow. The township was recorded as Parua Lefre in 1212, from the Latin, "parva" meaning little. The name was recorded in several ways, Lethre in 1221, Leuere in 1278,