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"
Darcy Lever a newsagent, a general store and four public houses, the Lever Bridge Inn, the Volunteer (formerly the Artillery & Volunteer), the Farmer's Arms and the Lever's Arms. The village also features two cricket pitches and borders both Moses Gate Country Park and Leverhulme Park. Darcy Lever also has the steepest public highway in Bolton, Gorses Steps. Through the village and park run the remains of the Manchester Bolton and Bury Canal and the Bolton-Bury/Radcliffe railway line, which had a station which was open between 1848 and 1951. The history and development of Darcy Lever as with its neighbour Little Lever