An elementary treatise on mechanics, embracing the theory of statics and dynamics, and its applications to solids and fluids (1868)
Smith, Augustus W. (Augustus William), 1802-1866 · New York : Harper · leaf 129
THE SCREW. 105 _ a sin. a cos. /3 .. P = tt?.y. —. / cos. (a—fj)By an examination of this value of P, it will be seen that thepower necessary to keep the wedge from moving will diminishas the wedge advances beneath the beam. //£. … § VII. THE SCREW. 172. If we divide the rectangle ABCD into equal parts bythe lines mn, mn, &c, parallelto AB, and draw the parallel di-agonals of the rectangles thus mformed, and if we suppose thewhole rectangle to be wrappedround the surface of a cylinder,the perimeter of whose base isequal…
Mechanics, Analytic
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