Physics - Fluid Question with Solution | TestHub

A thick walled glass capillary tube has an inner diameter of 1.0 mm, an outer diameter 4 mm and is 6 cm long. It is half immersed in an upright position in a large vessel of water. With what force (in mN ) doyou need to hold the tube to prevent it from drowning? The density of glass is twice that of water.Consider that the glass is completely wetted by water, the surface tension coefficient of water is $0.075\mathrm{N}/\mathrm{m}$. Density of water is $1000\mathrm{kg}/{\mathrm{m}}^3$. (Take : $\pi =3.2$ )