Two forces are applied to the small post BD as shown. Knowing that the vertical portion of the post has a cross section of 1.5 × 2.4 in., determine the principal stresses, principal planes, and maxi- mum shearing stress at point H. y 6000 lb 4 in. 1.5 in. 1 in. 17 3.25 in. B 500 lb 2.4 in. D 1.75 in. 6 in. x