A solid circular rod that is 600 mm long and 20 mm in diameter is subjected to an axial fo...

A solid circular rod that is 600 mm long and 20 mm in diameter is subjected to an axial force of p = 50 kN The elongation of the rod is δ = 1.40mm, and its diameter becomes d' = 19.9837 mm. Determine the modulus of elasticity and the modulus rigidity of the material. Assume that the material does not yield.