A bar of monel metal with a length L = 230 mm and a diameter d = 6 mm is loaded axially by a tensile force P (see figure). If the bar elongates by 0.5 mm, what is the decrease in diameter d? What is...

A bar of monel metal with a length L = 230 mm and a diameter d = 6 mm is loaded axially by a tensile force P (see figure). If the bar elongates by 0.5 mm, what is the decrease in diameter d? What is the magnitude of the load P? Use the data in Table I-2, Appendix I.