Acylindrical bar of metal having a diameter of 18.4 mm and a length of 192 mm is deformed elastically in tension with a force of 52400 n. given that the elastic modulus and poisson's ratio of the metal are 64.0 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.