For the structure shown, the masses can be treated as points. The length $L=0\mathrm{.}6m$ and mass $M=0\mathrm{.}4kg.$ The rotation axis is through the point P and perpendicular to the plane of the figure. If a torque of $9$ is applied to the structure about its rotation axis, what will its angular velocity be after one full revolution? Your answer should be in rad$/$s$,$ but enter only the numerical part in the box.