1. (a) What is the final length of a 2 m long bar of copper, 0.01 m in diameter, stressed by 4900 N of force? Ecopper (Assume the deformation is entirely elastic.) (b) If a steel bar of the same diameter has the same force of 4900 N applied to it, how long must it be, to extend the same amount of copper bar in (a)? (Esteel = 207 GPa) 1. (a) What is the final length of a 2 m long bar of copper, 0.01 m in diameter, stressed by 4900 N of force? Ecopper (Assume the deformation is entirely elastic.) (b) If a steel bar of the same diameter has the same force of 4900 N applied to it, how long must it be, to extend the same amount of copper bar in (a)? (Esteel = 207 GPa)