A shaft 70.0 mm in diameter is being pushed at speed of 0.4 m/s through a bearing sleeve 70.2 mm in diameter and 250 mm long. The clearance, assumed uniform, is filled with oil at 4degree C with viscosity of 0.005 m^2/s and s.g. =0.9. Find the force exerted on the shaft in N. a. 18,000 b. 4.50 c. 986.45 d. 989.64

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.