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Two glass discs of radius R = 5.0 cm wer...

Two glass discs of radius `R = 5.0 cm` were wetted with water and put together so that the thickness of the water layer between them was `h = 1.9 mu m`. Assuming the wetting to be complete. Find the force that has to be applied at right angles to the plates in order to pull them apart.

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This is analogous to the previous prolem except that : `A = pi R^2`
So `F = (2 pi R^2 alpha)/(h) = 0.6 kN`.
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