-10 ft- 20 ft Prob. 7-77 4 -10 ft- 7-78. Draw the shear and moment diagrams for the beam. 7-81. The bear B and E. Draw t A 2m -2 m 20 kN·m 8 kN 15 kN/m B 1m 1 m 2 m 2m 3m- Prob. 7-78 A 4.