Question

A wheel of radius r rolls (rolling without slipping) on a level road as shown in figure. Angular velocity of the wheel is $\omega$, as shown in figure. Find out velocity of point A and B.

Answer 1

The surface of the contact should be in rest for pure rotation.

So velocity of the point "A" is zero.

Velocity of point B is $v_B=v+wr=2wr=2v$

Here $v=wr$