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Mechanical Properties of Fluids — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsMechanical Properties of Fluids1 Mark
Question
Obtain the dimensional formula for coefficient of viscosity.
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Answer

According to Stoke's law, viscous force $\text{F}=6\text{}\pi\eta\text{r}\upsilon$

$\therefore$ Demensions of $\eta$ are $\frac{[\text{F}]}{\text{[r]}[\upsilon]}=\frac{\text{[M L T}^{-2}]}{[\text{L}]\times[\text{LT}^{-1}]}[\text{M}^1\text{L}^{-1}\text{T}^{-1}].$

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