Problem 4: A film of oil exists between two horizontal plates spaced 3mm apart. The lower plate is fixed and the upper plate is pulled with a constant velocity. The velocity profile between the two plates is found to have a non- linear profile that is defined as u = and the viscosity of the oil isu= 0.437 N.s/m2, determine (a) the shear stress 1mm above the fixed plate, and (b) the force required to pull the upper plate. (9y-0.6y²) mm/s where y is in mm. Assuming the top plate has an area of 0.5 m2 F 3 mm

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Q: D d N + A V dik a

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A: Given :

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A: Brief concept- Loss of heating and cooling in the building is a very essential part of the air…

British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.