Physics

Physics

Problem

A force FF acting tangentially on a layer of fluid moving with velocity gradient dvdy\dfrac{dv}{dy} over an area AA is expressed as F=ηA dvdyF = \eta A\, \dfrac{dv}{dy}. Here η\eta is the coefficient of viscosity. Find the dimensional formula of η\eta. a) [ML−1T−2][M L^{-1} T^{-2}] b) [ML−1T−1][M L^{-1} T^{-1}] c) [MLT−1][M L T^{-1}] d) [ML−2T−1][M L^{-2} T^{-1}]

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