Maurer, Edward R. (Edward Rose), b. 1869 · New York : John Wiley & sons, inc.; [etc., etc.] · leaf 60
e resultant Rof the wholly known forces; R and thethree partly unknown forces (P, Q, andS) would be in equilibrium. The specialcondition of equilibrium for four suchforces is that the resultant R of anypair as P and Q balances the other pair;hence R and the other pair (R and S)are in equilibrium,… … FiG. 66 50 Chap, n tration we take the preceding example. Let the two lower reactions becalled P and Q, and the upper one 5 (Fig. 66). The resultant R of theloads is I0.8 tons acting as shown (construction for R is indicated). Theresultant R acts through point i; and, since R and .S are concurrent…
Mechanics
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