6.8 A hydrostatic circular pad bearing operating under a minimum oil film thickness of 50 [um] supports a vertical load of 50 [kN] at a shaft speed of 2,000 [rpm]. The lubricant's viscosity at the operating temperature is 8.5 [cP], the recess oil pressure is 2 [MPa] and the external pressure outside the bearing is po = 0. Assuming that D/D, = 3, calculate: the bearing dimensions, the rate of oil flow through the bearing, the power losses 'H' due to viscous friction in the bearing and the coefficient of friction (assume that the friction force is acting at the mean radius of the bearing area). (Ans. D, = 0.095 [m], D = 0.282 [m], Q = 1.402x10" [m'/s], H = 3.69 [kW], # = 0.004)