The flat bars shown in parts (a) and (b) of the figure are subjected to tensile forces P = 3.0 k. Each bar has thickness t = 0.25 in.
(a) For the bar with a circular hole, determine the maximum stresses for hole diameters d = 1 in. and d = 2 in. if the width b = 6.0 in.
(b) For the stepped bar with shoulder fillets, determine the maximum stresses for fillet radii R = 0.25 in. and R = 0.5 in. if the bar widths are b = 4.0 in. and c = 2.5 in.

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Probs. 2.10-1 and 2.10-2