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starting with the inner cylinder finding (dV) = 2(3.14)rN (N) is the number of revolutionsDy=(A1-A2) that is the area of the out side cylinder to the inside cylinder

now.. we know that T=m(dV/Dy)

given the viscosity m it is a direct substitution to get shear stress.

if one torque is given then torque applied =torque resisted normally you will be asked for the torque of the other cylinder

t=t Xsurface Area X r

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