A beam fabricated from western white pine has been reinforced by bonding steel strips on its top and bottom surfaces as shown. If the design is limited to wood = 1.5 ksi in the wood and steel = 35.6 ksi in the steel, determine the maximum bending moment if the beam bends about its vertical axis of symmetry. STEEL ←L3 BERDEE

41. The wide-flange I beam as shown is 20 ft. long. It is fixed at one end and free at the other. A twisting moment of 30,000 lb-in. is applied at the free end. If E=30×10° psi and G =12x10° psi, compute the maximum normal and shearing stresses due to bending and the maximum shearing stress due to twist. What is the angle of twist of the beam at the free end? 10.5" 1.368" 0.845" 10" prob 41

Can I get the correct answers

Q4 A solid rectangular homogeneous section (total length = 7.2m) is simply supported, where b = 50 mm and d = 175 mm. A concentrated load F= 140 N acts at point C where L1= 4.00 m L2 = 3.20 m. Calculate the maximum bending stress and give your answer in N/mm² to 2 decimal %3D places. *Assume the weight of the beam is negligible and zero. F 200. L1 L2 b d A F B