All Problems

Liquids. Capillary effects

Problem 2.174

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

Reveal Answer
F2αm/ρh2=1.0 NF \approx 2 \alpha m / \rho h^{2}=1.0 \mathrm{~N}