A cold drawn rectangular steel bar (60 x 10 mm) with a hole of diameter 12mm is subject to a flctuating tensile load from 0-3 KN. Find the factor of safety to ensure infinite life using the modified Goodman line (i.e. Assume the Ultimate tensile strength is 450 Mpa and the Yield Strength is 380 MPa and that the marin surface finish correction factor is 0.7)