14.2 A rectangular beam 50 mm wide and 100 mm deep is subjected to bending. What bending moment will cause a maximum bending stress of 137.9 MN/m² (MPa)?/n14.8 A beam with the cross section shown is acted on by a bending moment of 10,000 lb-in. Determine (a) the maximum tensile and compressive bending stress, and (b) the bending stress I in. from the bottom of the beam. 0.25 in 0.25 in. -3 in.- PROB. 14.8 -0.25 in. 3 in./n14.10 A simply supported beam has a uniform load w-3.5 kip/ft and cross section as shown. Determine (a) the maximum tensile and compressive bending stress, and (b) the bending stress 3 ft to the right of point A and 3 in. from the bottom of the beam. wkip/ft 2 in. x 12 in. M 14 ft PROB. 14.10 2 in. x 8 in./n14.14 A cantilever beam has a uniform load w -1.10 kip/ft and cross section as shown. Determine (a) the maxi- mum tensile and compressive bending stress, and (b) the bending stress 10 ft to the left of point B and 2 in. from the top of the beam. 10 in 2 in w kip/ft 13 in. -18 ft - 2 in PROB. 14.14/n14.20 Compute the allowable uniform load w for the beam shown in the figure for Prob. 14.14 if the allowable tensile and compressive bending stress is 15.0 ksi./n14.40 Find the maximum shear stress for the cantilever beam with the cross section shown. -2.4 m- 150 kN 30 mm 500 mm 300 mm- 50 mm PROB. 14.40

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