Physics - Fluid Question with Solution | TestHub

Paragraph:A wooden cylinder of diameter $4r$, height $H$ and density $\rho /3$ is kept on a hole of diameter $2r$ of a tank, filled with liquid of density $\rho$ as shown in the figure.
Question:The block in the above question is maintained at the position by external means and the level of liquid is lowered. The height $h_2$ when this external force reduces to zero is