Problem 1: a) Determine the maximum positive and negative moment at point D; and b) maximum vertical reaction at point E; and c) Maximum shear just to the right of the roller support at point C, in the figure shown below due to a concentrated moving load of 24 kN and a uniform live load of 4.5 kN/m. Consider the self-weight of the beam is 3 kN/m. [Marks 8] B 2 2 m- 2 m- 1° 21 -2 m- D 4 m