Answer problems F11-9,11, 12 (no sketch), 13 (no sketch), and 11-58, and just max stress for 11-60 CE1-9 If the beam is subjected to a bending moment of 20 kN m, determine the maximum bending stress in the beam. FII-12 If the beam is subjected to a bending moment of M-10 kN m, determine the beading stress in the beam at points A and B, and sketch the results on a differential element at each of these points 20 min 20 mm M 200 mm Prob. F11-9 F11-10. If the beam is subjected to a bending moment of M-50 kN m, sketch the bending stress distribution over de beam's cross section. 300 mm 150 mm 150 mm Prob. F11-10 (11-11. If the beam is subjected to a bending moment of 50 kN m, determine the maximum bending stress in he beam. mm 20 m M 300mm 20 mm Prob. F11-11 200 30 50mm 150mm 150 mm 50 min 30 mm Prob. F11-12 F11-13. If the beam is subjected to a bending moment of M=5kN-m, determine the bending stress developed at point A and sketch the result on a differential element at this point. 50mm 150mm 25 150 Prob. F11-13 50mm 11-58. The beam is made from three boards nailed together as shown. If the moment acting on the cross section is M-1 kip ft, determine the maximum bending stress in the beam. Sketch a three-dimensional view of the stress distribution acting over the cross section. 11-59. If M-1 kip-ft, determine the resultant force the bending stresses produce on the top board A of the beam. 6 in 1.5 in. 12 im. M Sin 1.5 in. 6 in Probs. 11-58/59 11-60. The beam is subjected to a moment of 15 kip-ft. Determine the resultant force the bending stress produces on the top flange A and bottom flange B. Also calculate the maximum bending stress developed in the beam. 11-61. The beam is subjected to a moment of 15 kip-ft. Determine the percentage of this moment that is resisted by the web D of the beam. M-15 kip-ft- 8 in. 1 in 1 in 3 in B