A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 123
body along a rough hori-zontal plane for a distance s. The work done is thenequal to P X s [97 (1)]. But as it is difficult to determinethe value of P directly, the principle may be made use ofthat: If the body moves uniformly, this force must bejust equal to the force of friction; that is, P = F.… … Fig 41. an inclined plane whose height is h, and whose angle ofinclination HLK is a; then (97) the work done in raising the weight = W.h. Also, if I is the length of the plane and /* the coefficientof friction for the surfaces in contact, since F— juR =jxWcos a (89, 91), the work done against…
Mechanics
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