Problem 9.19 A traffic light hangs from a pole as shown in (Figure 1) The unifor

Question

Problem 9.19 A traffic light hangs from a pole as shown in (Figure 1) The uniform aluminum pole AB is 8.00 m long and has a mass of 13.0 kg The mass of the traffic light is 20.5 kg of 1 Figure 1 37° 3.80 m Determine the tension in the horizontal massless cable CD Express your answer to two significant figures and include the appropriate units LLA Value Units Submit My Answers Give Up Part B Determine the vertical component of the force exerted by the pivot A on the aluminum pole Express your answer to two significant figures and include the appropriate units. Enter positive value if the force is upward and negative value if the force is downward. LLA Ay Value Units

Explanation / Answer

A) torque about A = 0

=> T x 3.8 = [13 x 4 cos37 + 20.5 x 8 cos37] x 9.8

=> T = 45.4 x 9.8 = 444.92 N

B) FAy = (13 + 20.5)g = 33.5 x 9.8 = 328.3 N

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