A short rectangular post supports a compressive load of P = 600 lb as shown. A top view of the post showing the location

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A short rectangular post supports a compressive load of P = 600
lb as shown. A top view of the post showing the location where load
P is applied to the top of the post is also shown. The
cross-sectional dimensions of the post are b = 5.75 in. and d =
11.50 in. The load P is applied at offset distances of yP = 3.50
in. and zP = 1.50 in. from the centroid of the post. Determine the
normal stresses at corners A, B, C, and D of the post. Answers:
psi σA=
σB =
psi σC
psi σD