The beam AB is subjected to the uniformly distributed load shown and to two unknown forces P and Q. Knowing that it has been experimentally determined that the bending moment is 1800 N ? m at D and...

The beam AB is subjected to the uniformly distributed load shown and to two unknown forces P and Q. Knowing that it has been experimentally determined that the bending moment is 1800 N ? m at D and 11300 N ? m at E, (a) determine P and Q, (b) draw the shear and bending-moment diagrams for the beam.