Lever is obtained as which is the mechanical advantage of the lever. This equation shows that if the distance "a" from the fulcrum to the point "A" where the input force is applied is greater than the distance "b" from fulcrum to the point "B" where the output force is applied, then the lever amplifies the input force. If the opposite is true that the distance from the fulcrum to the input point "A" is less than from the fulcrum to the output point "B", then the lever reduces the magnitude of the input force. Lever A lever ( or )
Darcy Lever constructed with a timber frame with plaster fill and a grey slate roof in the Tudor style. It was located on the high ground that slopes down to Blackshaw Brook, which flowed past the south side of the house near the junction with the River Croal. The hall was demolished in 1951. The growth of the textile industry around Darcy Lever was assisted by the availability of coal. By 1896 John Fletcher owned coal mines at Ladyshore, Little Lever; The Earl of Bradford had a coal mine at Great Lever and the Darcy Lever Coal Company and others had mines