2. (35 pts) The beam ABCDE has simple supports at A, C, and E and a hinge/pin at B. It has a rectangular cross section of width b = 8 cm and height h = 24 cm. A concentrated load of 160 kN acts at D, and a uniformly distributed load of intensity 80 kN/m acts over beam AC. a) Determine the reactions at the supports A, C, and E. (Hint: A pin transmits a shear force but not a bending moment) b) Determine the normal stress and the magnitude of the shear stress at a point 4 cm below the top surface of the midpoint of beam DE. 80 kN/m 2.4 m B ** 0.6m 1.5m 160 kN to 1.5m h