Physics - Fluid Question with Solution | TestHub

There will be two surface formed (front side and back side) and force due to surface tension will be given by:

$F=TL +TL =2TL$

Force must balance the weight to keep it in equilibrium

$$\begin{gathered} W=2TL \\ mg=2TL \\ T=\frac{mg}{2L} \\ T=\frac{1.5\times {10}^{-2}}{2\times 0.3}=0.025 {\mathrm{Nm}}^{-1} \end{gathered}$$