Orange JO AO X 91|4 2:26ch1_introductio..Shear stress (t) is the resistance per unit area of the upper plate t = R/A=T/AWater responds to shear stress by continuously yielding in angular deformation in thedirection of the shear.IThe rate of angular deformation in the fluid, d(8)/dt ,is proportional to the shearIstress, as shown in Figure 1.1.dodtdx,and v =dydxAngular deformation (Shear strain), 0 =dtdoRate of shear strain =dtdxdv(Velocity gradient)dydy dtdvTherefore, todvT = constantdydvT = -dyThe proportionally constant, u, is called the absolute viscosity of the flyidExampleA flat plate of 50 cm² is being pulled over a fixedflat surface at a constant velocity of 45 cm/sec(Figure 1.1). An oil film of unknown viscosityseparates the plate and the fixed surface by adistance of 0.1 cm. The force (T) required to pullthe plate is measured to be 31.7 N, and the viscosityE of the fluid is constant. Determine the viscosity(absolute).22ExampleA flat plate of 50 cm² is being pulled over a fíxed flå!constant velocity of 45 cm/sec (Figure 1.1). An oil fih.unknown viscosity separates the plate and the fixed surface by aat a

first of all find out the shear stress = force/ Area. then apply newtons law of viscosity.for…

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Engineering

Mechanical Engineering

dv dy

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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