Solve Prob. 7.47 when a = 1.8 ft. Problem 7.47: Two short angle sections CE and DF are bolted to the uniform beam AB of weight 900 lb, and the assembly is temporarily supported by the vertical cables EG and FH as shown. A second beam resting on beam AB at I exerts a downward force of 810 lb on AB. Knowing that a = 0.9 ft and neglecting the weight of the angle sections,

(a) Draw the shear and bending-moment diagrams for beam AB,

(b) Determine the maximum absolute values of the shear and bending moment in the beam.

0.3 ft 0.3 ft 4.5 ft 4.5 ft-