Acylindrical bar of metal having a diameter of 18.7 mm and a length of 200 mm is deformed elastically in tension with a force of 53200 n. given that the elastic modulus and poisson's ratio of the metal are 66.3 gpa and 0.32, respectively, determine the following: (a) the amount by which this specimen will elongate in the direction of the applied stress.
(b) the change in diameter of the specimen. indicate an increase in diameter with a positive number and a decrease with a negative number.