Given that w = - 4 kN/m, F = 7 kN, M = 8 kN.m, a = 3 m and b = 1.5 m. a) Determine the internal normal force (in kN), internal shear force (in kN), and internal bending moment (in kN-m) at point D in the overhang beam. Point D is located just to the left of the roller support at B, where the couple moment acts. b) Determine the internal normal force (in kN), internal shear force (in kN) and the internal bending moment (in kN-m) at point E in the overhang beam. M W C D B E a b b 3 4 LL