Wood, De Volson, 1832-1897. [from old catalog] · New York, J. Wiley & sons · leaf 106
ere discussed withoutreference to the bodies upon which the forces act. Page 110, Art. 176.—The cut, Fig. 55, should be ashere given; that is, in thetypical figure the force shouldbe positive away from theorigin, and so placed that itwould produce positive rota-tion about the origin, O, andthe… … 98 KEY AXT> SUPPLEMENT typical form of the expression for the arm of theforce will be Oa = x cos fi -y cos a. In the old Fig. 55, the angle between the axis of a?and the direction line of the force was, as shown in Art. 157, a = 180° + dOb; and similarly, ft = 180° + YOcl;.-. cos a = — cos…
Mechanics
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