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Unformatted text preview: i + 4 j ) N, where i and j are unit vectors due east and due north respectively, act on a particle. Find the magnitude and direction of the resulting force. EXAMPLE Forces P , Q and R act on a particle at O in the plane of the coordinate axes Ox , Oy , making angles p , q , r respectively with Ox in the first quadrant. P = 4 N, Q = 3 N, R = 6 N, p = 30°, q = 45°, r = 60°...
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 Winter '09
 RICHARDVANFLEET
 Force, 45°, 30°, 4j, 60°, resultant forces

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