Problem 9.19 Part A Determin·ther tension inthe honantal massless cable CD. Atra

Question

Problem 9.19 Part A Determin·ther tension inthe honantal massless cable CD. Atraffic light hags hom pole asshown in (Eart) The unform sluminum pole ABl s 730 n long and has a mass of 12.5 kg.The mass of the traffic ight is 225 kg Express your answer to two significant figures and include the appropriate unts Frs Value Units Part B Deenmine the vertical component of the force exened by the pivot A on the aluminum pole Express your answer to two signficant figures and include the appropriate unts Ent" posnve value the force os upward and negave value the force is FAValue Units Part C Determine the orompoent of the orted by te pit A on the aluminum po

Explanation / Answer

(A) balancing moment about hinge A,

M = (7.30/2 x 12.5 x 9.8 cos37 ) + (7.30 x 22.5 x 9.8 x cos37) - ((3.80/sin37) T sin37) = 0

357.1 + 1285.5 = 3.80 T

T = 432.3 N ...........Ans

(B) Fy = (12.5 + 22.5)g = 343 N

(C) Fx = T = 432.3 N

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