A circular beam is loaded and supported as shown below. The material used to make the beam has a maximum allowable bending stress of allow = 125 MPa. Recall that the second moment of area for a circle is ( W Use the following values in your working out: L L = 24 m d = 18 cm Old a) Draw the FBD, SFD and BMD for the beam. (1.5 marks) b) Write an expression for the internal bending moment as a function of length. Clearly show what convention you're using for positive length. (1 mark) c) Determine the maximum allowable intensity of w. (2 marks)