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A flat plate of area A = 0.1 m^2 is sliding on a oil-film of thickness 1 × 10^–5 m with a speed of 1 mms ^–1 .

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A flat plate of area A = 0.1 m2 is sliding on a oil-film of thickness 1 × 10 –5 m with a speed of 1 mms –1 . Find the force F maintaining the speed of co-efficient of viscosity of oil is 1.5 kg m–1 s–1 .

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Here thickness is small so that dv/dz 

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