Elements of mechanics: treated by means of the differential and integral calculus (1887)
Peck, William G[uy], 1820-1892. [from old catalog] · New York, Chicago, A. S. Barnes & company · leaf 38
required components. Denote these components, re-spectively, by X, Y, and Z. Draw lines from R, to L, M, and Jl fir. n. COMPOSITION AND KESOLUTION OF FORCES. 33 right-angledangle N, respectively; these will be perpendicular to the axes, andwith them, and the force R,will form threetriangles. Denote… … Fig. 11. X — R cos a, Y= R cos /3, and Z — R cos y. The angles a, /3, and 7, are estimated from the directionsof the positive co-ordinates, through 360°. The componentsabove found will be positive when they act in the directionof positive co-ordinates, and negative when they act in acontrary…
Mechanics
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