Question 3 (40 Points): A wing spar has the dimensions shown in the top figure and carries a uniformly distributed load of 15 kN/m along its complete length Each flange has a cross sectional area of 500 mm2 with the top flange being horizontal. If the flanges are assumed to resist all direct loads while the spar web is effective only in shear a) Determine the flange loads , and , at cross section 1 (25 Points) b) Determine the shear flow (,) in the web at cross section 1 (15 Points)