A cylindrical rod of diameter 12.5 mm fabricated from a 70Cu-30Zn brass alloy (Figure) is subjected to a repeated tension-compression load cycling along its axis. Compute the maximum and minimum loads that will be applied to yield a fatigue life of 1.0 × 106 cycles. Assume that data in Figure were taken for repeated axial tension-compression tests, that stress plotted on the vertical axis is stress amplitude, and data were taken for a mean stress of 30 MPa.