(10%) Problem 9: A sandwich board advertising sign is constructed as shown in the figure, Hinge where "CG" indicates the center of gravity for each board. The sign's mass is 7.8 kg. 0.50m Chain 1.30m . CG CG Uniform board (CG at center) - . 1.10 m 4 50% Part (a) Calculate the tension, in newtons, in the chain assuming no friction between the legs and the sidewalk. A 50% Part (b) What force, in newtons, is exerted by each side on the hinge? Grade F = Deducti Potenti