The simply supported beam shown in Figure I has a solid rectangular cross-sectional area. Determine the following: a) Calculate the reactions at the supports (5%). b) Calculate the internal loadings V and M of the beam and draw their diagrams (10% +10% 20%). c) Calculate and draw the shear stress distribution at point B of the beam (20%). d) Calculate the deflection at point B of the beam using an energy method. Consider only the effect of bending (20%). Consider El is constant and E-200 GPa. The dimensions of the beam and of the beam's cross-sectional area can be found in Figure 1. frem A 25 kN 25 KN 8 kN/m 2 m + 2 m 4 m m D 10 cm Figure 1: Beam and cross-sectional area 28 cm Cross-sectional area