9000072907

A homogeneous cube with the side $10\mathrm{cm}$ is in the water. The bottom side is parallel to the water surface $10\mathrm{cm}$ below the surface. Find the work required to move the cube to the position when the bottom side just touches the surface of the water. The mass density of the cube is $2000{\mathrm{kg}\mathrm{m}}^{-3}$, the mass density of the water is $1000{\mathrm{kg}\mathrm{m}}^{-3}$ and the standard acceleration of gravity is $g=10{\mathrm{m}\mathrm{s}}^{-2}$.