problem 7.71 using the method of section 7.3, solve problem 7.39. problem 7.39 for the beam and loading shown, (a) draw the shear and bending-moment diagrams, (b) determine the maximum absolute values of the shear and bending moment. 60 kN 25 kN/m 2 m 2 m-and bending-moment diagrams, (b) determine the maximum absolute