4. A journal bearing supporting a shaft load of 121 kilograms has 100 microns of eccentricity. If the torque required to spin the shaft is 0.24 Newton-meter. a. how much

torque does the sleeve experience? b. What is the radius of the journal bearing if the average gap height is 200 microns, the rotation rate is 50 rad/s, and viscosity of 0.1 Pa*s?