A fix inclined-plane thrust bearing with the following specifications is designed to support a total normal load of 50kN at optimum capacity: ro = 100mm, ri =50mm, N = 3600 rpm, l/b = 1, b = 40mm, hi – h0 = 25 m, and SAE 20 oil is used with an inlet temperature of 55°C (d = 29 cP). Assume that the change in oil is small and calculate the minimum film thickness.