What is SI unit of viscosity coefficient (eta) ?

1.	What is SI unit of viscosity coefficient (eta) ?
Answer» Pascal `Nsm^(-2)` `Km^(-2)s` `Nm^(-2)` SOLUTION :SI unit of viscosity COEFFICIENT `(eta)` is `Nm^(-2)` s or `Nsm^(-2)`. We known that, `f= eta A(dv)/(dx)` f = force `eta =` viscosity coefficient `(dv)/(dx)=` VELOCITY gradient Now, PUT SI units of f = N, dx = m, A `m^(2)` and V `= ms^(-1)` in above equation. We get, `eta = (N xx m)/(m^(2)xxms^(-1))` `= Nm^(-2)s` Hence, unit of `eta = Nsm^(-2)`

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