Problem-1 20 pts. A cantilever box beam with upward distributed load acting along one of the top stringer and an a side-wise distributed load acting along the middle of the leading edge which is semicircular cylinder centered at O, midway between stringers 1 and 7. The stringer coordinates with respect to the axes shown are listed in the table, along with their areas. Determine bending stresses in each stringer at x = 150 in from the free end. Stringer 1 z coordinate (in) y coordinate (in) Area (in) 0.0 0.0 2.0 2 12.0 0.0 1.0 3 24.0 0.0 0.5 4 24.0 6.0 0.5 5 16.0 7.0 0.75 6 8.0 8.0 0.75 7 0.0 9.0 2.0 5 lb/in. 25 lb/in. 200"