The simply supported beam in Figure 3 has the symmetric I-section shown. Using τ = VQ/(Ib) at the section of maximum shear force, determine (a) the moment of inertia of the section about the neutral axis (in ×10^{6} mm^{4}), (b) the shear stress in the web just below the flange (in MPa) and (c) the maximum shear stress in the section (in MPa).