All Problems

Liquids. Capillary effects

Problem 2.174

Find the attraction force between two parallel glass plates, separated by a distance h=0.10 mm,h=0.10 \mathrm{~mm}, after a water drop of mass m=70mgm=70 \mathrm{mg} was introduced between them. The wetting is assumed to be complete.

Reveal Answer
F≈2αm/ρh2=1.0 NF \approx 2 \alpha m / \rho h^{2}=1.0 \mathrm{~N}
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