Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 210
A Fig. 382. Fig. 384. the same as the weight P. A D, therefore, gives the amount and direction of the re-sultant of the two forces P and P, which resultant is balanced by P. In the sameway the resultant of any number of inclined forces (Fig. 382) may be found by com-pounding the resultant of any…
Mechanical drawing
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