1-30. The Newtonian fluid is confined between the plate and a fixed surface. If its velocity profile is defined by u = (8y-0.3y²) mm/s, where y is in mm, determine the force P that must be applied to the plate to cause this motion. The plate has a surface area of 15(10³) mm² in contact with the fluid. Take μ = 0.482 N.s/m². 4 mm Prob. 1-30

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A: GIVEN:T1=250P1=20ATMT2=750

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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.