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A rectangular sign over a store has a mass of 140 kg, with the center of mass in the center of the rectangle. The support against the wall at point C may be treated as a ball-and-socket joint. At corner D support is provided in the y-direction only. Calculate the tensions T1 and T2 in the supporting wires, the total forces supported at C, and the lateral force R supported at D. THe force R is positive if it points in the +y-direction, and negative if it points in the -y-direction.

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