QUESTION 9 Maximum force in Aluminum bar, so the aluminum bar will be safe, [P] in [kN]: 12.8 55.3 14.1 18.3 QUESTION 10 Maximum force in the structure (three bars), so the whole structure will be safe. [P] in [kN]: 39 28.6 12.8 6.7 QUESTION 7 A bronze bar is fastened between a steel bar and an aluminum bar as shown in Figure below. Axial loads are applied at the positions indicated. Find the largest value of P so that the allowable stress will not exceed 40 MPa in the steel, 120 MPa in the bronze, and 80 MPa in the aluminum. Use Est-200 GPa, Eal-70 GPa, and Ebr-83 GPa. [Question 7-Question 101 Steel A = 480 mm² Bronze A = 650 mm² 3P 4P P 1.0 m 2.0 m Aluminum A = 320 mm² 2P 1.5 m