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by Matlab Calculate the shearing stress at y=0 using one point forward difference and three point forward difference.( No Central difference) using u=0.002

The distribution of thex- component of the velocity cof a fluid near a flat surface is measured as a function of the distance y from the surface: y (m) 0 0 0.002 0.004 0.006 0.008 c(m/s) 0.00618 0.011756 0.01618 0.019021 Dynamic (absolute) viscosity or the coefficient of dynamic viscosity is a measure of the internal resistance (internal friction within the fluid). It is the tangential force per unit area required to move one horizontal plane with respect to the other at unit velocity when maintained a unit distance apart by the fluid. The shearing stress 5, between the layers of non turbulent fluid moving in straight pallel lines can be described by Newtons equation ac ух- ду : :胆 where u is the coefficient of dynamic viscosity. Fluids that obey Newtons constitutive equation are called Newtonian fluids. Calculate the shearing stress at y-0 using two different approximating formulas for the derivative. Take the value u-0.002 Ns/m2. Compare your results with MATLABs diff function.

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