Chapter 9 review problem 9.50 In the structure shown, the tie-back BC is a round steel rod having a diameter of 17 mm. The steel strut AC is a tubular section having a cross-sectional area of 1350 mm^2. Find the total deformation in each number. AB is 3m, AC is 1m in the y-direction and 5m in the x-direction and P = 45kN at point C pointing downward