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 257
cos or W tan or, (5) and, for R = TTcos(ar+/?) . , \ ^—jt9 is obtained cos/? • R Wcos or = W sec or. (6) From (5), it a - 90°, P = oo ; that is, no finite forcecan support a body against a vertical surface if the sur-faces in contact are perfectly smooth and there is noadhesion. This is only a… … article can also be obtained independently by anothermethod. (a) The power acts along the plane. Let the linesP, P, W represent the three forces holding the body at 230.] IKCLIKED PLANE. 239 A in equilibrium. From P draw BC parallel to thedirection of W\ then the triangle ABC has its threesides…
Mechanics
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