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3) A sandwich board advertising sign is constructed as shown in the figure below.
Hinge
Chain
©2011 Brooks/Cole Thomson Learning
CG
CG
0.50 m
Uniform board
(CG at center)
1.30m
1.10 m
The sign's mass is 5.10 kg.
(a)Calculate the tension in newtons in the chain assuming no friction between the legs and the sidewalk.
N
(b)What force is exerted in newtons by each side on the hinge?

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