Physics - Fluid Question with Solution | TestHub

Surface energy of this elementary cylinder is $\mathrm{S}\left[2\pi \mathrm{Rh}+2\pi {\mathrm{R}}^2\right]$

Pressure inside the cylinder is more than atmospheric pressure by $\frac{2\mathrm{S}}{\mathrm{R}}$

Force exerted by one half cylinder on another half cylinder due to surface tension is 2 Sh .

Surface energy of this elementary cylinder is $\mathrm{S}\times 2\pi \mathrm{Rh}$