4.2.25 | правка #13367 | Решения Савченко

Statement

4.2.25^∗. A cylindrical vessel of radius $$R$$ filled with liquid of density $\rho$ rotates with angular velocity $\omega$ about its axis. In the vessel there is a ball of radius $$r$$ and density $2\rho$ . Find the force with which the ball presses on the side wall of the vessel.

Solution

For problem $4.2.25$ — For problem $$4.2.25$$

Answer

$F=(4/3)\pi r^3(R-r)\rho\omega^2.$