A shaft 70 mm in diameter is being pushed at a speed of 400mm/s through a bearing sleeve 70.2 mm in diameter and 250 mm long. The clearance, assumed uniform is 0.1mm and is filled with oil at 20°C with v = 0.005 m²/s and s. g = 0.9. a) Find the force exerted by oil on the shaft b) If the shaft is fixed axially and rotated inside the sleeve at 2000 rpm, determine the resisting torque exerted by the oil and the power required to rotate the shaft. 70.2 mm 70 mm 400 mm/s