1.A cylindrical specimen of some alloy 50.26 mm2 in cross sectional area is stressed elastically in tension. A force of 1620 N produces a reduction in specimen diameter of 5 X 10-3 mm. Compute Poisson's ratio for this material if its modulus of elasticity is 140 GPa.
2.A cylindrical rod of brass alloy (E = 100 GPa,) having a yield strength of 345 MPa is to be subjected to a load of 7500 N. If the length and diameter of the rod are 338 mm and 7.55 mm respectively, what must be the allowable elongation?