Elements of mechanics: for the use of colleges, academies, and high schools (1859)
Peck, William G. (William Guy), 1820-1892 · New York, A. S. Barnes & Burr · leaf 117
e-half the resistance. If, therefore,the resistance of the fixed point G he replaced by a forceequal to _P, the equilibrium will be undisturbed. If the two branches of the en-veloping cord are oblique to eachother, the condition of equilibriumwill be somewhat modified. Sup-pose the resistance of… … Fig. 77. 2 Pcosp = B. Draw the cord AB between the points of contact of thecord and pulley, and denote its length by c; draw, also,the radius OB. Then, since OB is perpendicular to ABand BP to OB, the angle AB 0 will be equal to one halfof the angle AB C, or equal to p. Hence, cos<p = \c -7- r…
Mechanics
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