(4 points) Determine the internal normal force, shear force, and moment at points C and D of the beam. Let the loading coefficents be: W = 60 lb/ft, W = 31 lb/ft. Let the force be: F = 700 lb. Let the lengths be: L = 5.5 ft, L = 15 ft, L3 = 12 ft, L = 3 ft. Wi W2 13 12 C B D L1 L2 The normal force at point C is: Frc= L3 -L4- lb. The shear force at point C is: Fyc = F CC) + BY UVIC lb. The moment at point C is: Mc = lb-ft. lb-ft. The normal force at point D is: Fxd= lb. The shear force at point D is: Fyd = lb. The moment at point D is: Md