Q. In a bicycle the radius of rear wheel is twice the radius of front wheel. If $r_{f}$ and $r_{r}$ are the radius, $v_{f}\ $and $v_{r}$ are the speed of top most points of wheel, then
A) $v_{r} = 2v_{f}$
B) $v_{f} = 2v_{r}$
C) $v_{f} = v_{r}$
D) $v_{f} > v_{r}$
Explanation
(c) Speeds at the top point of each wheel will equal and is equal to the speed of centre of mass.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.