2%) Question 5. (3pt) A cylindrial bar of copper 16 mm in diameter and 90 mm long is subjected to a uniaxial tension test. Its length increased by 0.52 mm under a load of 58 kN. At the same time, its diameter decreased by 0.24 mm. If a copper alloy has a yield strength of 240 MPa and a modulus of elasticity of 11x104 MPa. Calculate: ess. (4pt) a) The maximum tensile load that may be applied to a material without causing plastic deformation. (4pt) stress. (4pt)