A beam of square cross section (b=d=20cm) is 2 m long and simply supported at both ends. It carries a 100 N point load 0.25m from its left hand end.
i) Sketch the shear force and bending moment diagrams for the beam, and show that the maximum bending moment in the beam is 21.875 Nm.
ii) Calculate the maximum tensile and compressive stresses due to bending.