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  4. A disc is rolling (without slipping) on a horizontal surface. C is its centre and Q and P are two points equidistant from C. Let vP, vq and vc be the magnitude of velocities of points P,Q and C respectively, then

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Q. A disc is rolling (without slipping) on a horizontal surface. C is its centre and Q and P are two points equidistant from C. Let $v_P$, $v_q$ and $v_c$ be the magnitude of velocities of points P,Q and C respectively, thenPhysics Question Image

AIPMTAIPMT 1999System of Particles and Rotational Motion

Solution:

In case of pure rolling bottom most point is the instantaneous centre of zero velocity.
Velocity of any point on the disc, $v=r \omega$, where $r$ is the distance of point from $O$
$r_{Q} > r_{C} > r_{P}$
$\therefore v_{Q} > v_{C} > v_{P}$