Question

A container, whose bottom has round holes with diameter $0.1mm$ is filled with water. What will be the maximum height in $cm$ up to which water can be filled without leakage.
Surface tension $=75\times {10}^{-3}N/m$ and $g=10m/s^2$.

Answer 1

Pressure = $\frac{2T}{R}=sgh$

$\frac{2\times 75\times {10}^{-3}}{0.1\times {10}^{-3}}={10}^3\times 10\times h$

$1500={10}^{4}h$

$h=0.15m=15cm$