Two uniform planks, each of mass m = 4.41 kg and length L = 2.11 m, are connected by a hinge at the top and by a chain of negligible mass attached at their centers, as shown in the figure. The assembly will stand upright, in the shape of an A, on a frictionless surface without collapsing. If the chain has the length 0.61 m, find each of the following:
a) the absolute value of the tension in the chain,
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b) the absolute magnitude of the force on the hinge of each plank, and
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c) the force of the ground on each plank.