All Problems

Liquids. Capillary effects

Problem 2.172

A water drop falls in air with a uniform velocity. Find the difference between the curvature radii of the drop's surface at the upper and lower points of the drop separated by the distance h=2.3 mmh=2.3 \mathrm{~mm}

Reveal Answer
R2−R1≈1/8ρgh3/α=0.20 mmR_{2}-R_{1} \approx 1 / 8 \rho g h^{3} / \alpha=0.20 \mathrm{~mm}
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