5. A 400 mm diameter shaft is rotating at 200 r.p.m. in a bearing of length 120 mm. If the thickness of oil film is 1.5 mm and the dynamic viscosity of the oil is 0.7 N.S/m², determine: (i) Torque required to overcome friction in bearing; (ii) Power utilized in overcoming viscous resistance. Assume a linear velocity profile. مكتب القمة للطباعة والاستنسا :

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