Infinitely Many inclined planes.

A disc of mass $\SI{3}{\kilo\gram}$ and radius $\SI{7}{\centi\meter}$ is placed at position $(-2, 1)$ of the rigid, parabolic path $x^2 = 4y,$ as shown. It slides down from this point at $t = 0$ and there is enough friction for pure rolling of the disc.

The angular velocity of the disc at $(0 , 0)$ is deonted by $\omega,$ and the velocity of the disc at $(0, 0)$ by $v,$ both in S.I. units.

Find numerical value of $\omega - 10 \times v.$