Two separate cables AC and BC support a sign structure of weight W = 7 kN attached to a building. The sign is also supported by a pin support at O and a lateral restraint in the z-direction at D. (a)...

Two separate cables AC and BC support a sign structure of weight W = 7 kN attached to a building. The sign is also supported by a pin support at O and a lateral restraint in the z-direction at D.

(a) Find the tension in each cable. Neglect the mass of the cables.

(b) Find the average stress in each cable if the area of each cable is A_e
= 300 mm².