An elementary treatise on theoretical mechanics (1893)
Ziwet, Alexander, 1853-1928 · New York, London, Macmillan and Co. · leaf 136
a couple H. For all these reductions the mag-nitude, direction, and sense of the resultant R are the same, butthe vector H of the couple changes according to the positionassumed for the line of R. There is one, and only one, positionof R, called the central axis of the system, for which the vector… … Fig. 69. 209. While, in general, a system of forces cannot be reducedto a single resultant, it can always be reduced to two non-inter-secting forces. This easily fol-lows by considering the systemreduced to its resultant R andresulting couple H for any H.origin O (Fig. 69). Let F,—/^ be the forces,…
Mechanics, Analytic
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