Three beams of identical cross – section but of different material (steel, timber and Al – alloy) are subjected to equal bending moment at a certain section. Which one of the following statements is correct?
(a) Maximum bending stress will be same in all the three beams
(b) Maximum shearing stress magnitudes will be different in the three beams
(c)Bending stress magnitude will be the largest in the steel beam
(d) Bending stress magnitude will be the largest in the timber beam