Given that w1 = 4 kN/m, w2 = 3.5 kN/m and a = 1.5 m, a) Determine the internal normal force (in kN), internal shear force (in kN), internal bending moment (in kN.m) at point D of the two-member frame. b) Determine the internal normal force (in kN), internal shear force (in kN), internal bending moment (in kN.m) at point E of the two-member frame. a A W1 a B W2 D a T a 0 N M V Sign convention of internal loads for vertical member