A 120° central, partial bearing is 2 in. in diameter × 3 in. long with a radial clearance of 0.001 in. The shaft turns at 900 rpm. Loading is 150 psi of projected area. Room temperature is 100°F. SAE 10 oil is used. Heat transfer coefficient C1 equals 2 Btu/hr/ft2/°F. For a minimum film thickness of 0.0004 in., find the average temperature in the film and the required value for constant C2.
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