6) Assume the engine in problem 3, applies a torque around the x-axis of the spar of 100 kN-m, calculate the angular delfection of the wing at x = 3 m due to the engine. (10 Points) 3) The force, Fr= 1 kN, and moment, Mr = 0.5 kN-m, at the tip are caused by a wing tip vortex and a winglet, not shown. L = 12 m and the spar has an elastic modulus of E = 70 GPa and a Poisson's ratio of = 0.33. The mass of the wing is 4000 kg, and the weight of the engine is 107 kN. Use 9.8 m/s for the acceleration due to gravity. (15 points) L 13 kN/m 30 x Mr L/4 L/4 W Ww H