A man is standing on a uniform plank of mass 20 kg and 6 m long. He is standing 1 m from the string at A. a) Find the unknown forces FA and FB. ( Ans: Fa = 550 N and FB = 250 N) The man now walks to the left of A. b) Determine the maximum distance in which the man can move before the plank topples. (Ans: d = 0.67 m)