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There is a 1mm thick layer of glycerine ...

There is a 1mm thick layer of glycerine between a flat plate of area `100cm^(2)` and and a big plate. If te coefficient of viscosity of glycerine is `1.0kg//m-sec`, then how much force is required to move the plate with a velocity of 7 cm/sec.

Text Solution

Verified by Experts

Required force `F=etaA(DeltaV)/(Deltax)`
`=(1.0xx100xx10^(-4)xx(7xx10^(-2)))/(10^(-3))=0.7N`
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