3. A two-bar truss structure supported by a spring is shown below. Compare the stresses in both elements if the 50 kN force is applied at node 1 at an angle 6. Young's modulus, E and cross-sectional area, A of the bars are 200 GPa and 300 mm² respectively. The spring stiffness, k is 20 kNm"¹. 500 mm- k 50 kN 8-71.56° 400 mm. 300 mm