Two structural members B and C are bolted to bracket A. knowing that both member

Question

Two structural members B and C are bolted to bracket A. knowing that both members are in tension and that P= 10 kN, determine graphically the magnitude and direction of the resultant force exerted on the bracket using (a) the parallelogram law (b) the triangle rule.

Two structural members B and C are bolted to bracket A. Knowing that both members are in tension and that P = 10 kN and Q = 15 kN, determine graphically the magnitude and direction of the resultant force exerted on the bracket using (a) the parallelogram law, (b) the triangle rule.

Explanation / Answer

net force in x =10cos25 + 15 cos 50
in x =18.7 kN

net in Y
= 10 sin25 -15 sin50
= -7.26 lb

angle= tan^-1(-7.26/18.7)
= -21.21

resultant R = 20.06 at angle 21.21 degrees below horizontal   

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