The velocity of sliding of meshing gear teeth is
(Where $\omega _{1}$ and $\omega _{2}$ Angular velocities of meshing gears x = distance between point of contact and the pitch point)
(a) $\omega _{1}$ X $\omega _{2}$ (b) $\frac{\omega _{1}}{\omega _{2}}$
(c) ($\omega _{1}$ X $\omega _{2}$) x (d) $\frac{\omega _{1} + \omega _{2}}{x}$