A uniform sphere of mass m, radius r and moment of inertia I about its centre moves along the x-axis as shown in figure. Its centre of mass moves with velocity = v₀, and it rotates about its centre of mass with angular velocity = ${\mathrm{\omega }}_0$. Let $\overrightarrow{\mathrm{L}}=\left({\mathrm{I\omega }}_0+{\mathrm{mv}}_0\mathrm{r}\right)(-\tilde{\mathrm{k}})$. The angular momentum of the body about the origin O is