A beam section, shown in Figure 1, is subjected to bending moments about the horizontal, x, and vertical, y, axes given by the table below: Mx -500 in-lb My -2500 in-lb The section has web height, h = 2.9", flange width, w = 1.9", and uniform thickness of 0.12". Questions All answers to 4 significant figures. Part (a) A B C D W Figure 1 Part (a) Calculate the second moments of area for the section: Ixx = in4 Iyy = in4 Ixy = in4 Part (b) Complete the expression for bending stress, b. Be very careful with the sign of your answers. b = Part (c) x+ Complete the table of bending stress at the labelled points on the section: Point x(in) y(in) b(psi) A -0.95 1.45 B 0.95 1.45 C -0.95 -1.45 D 0.95 -1.45 Part (d) What is the maximum (positive) bending stress in the section? Ob,max = psi Ti