Q. Two racing cars of masses $m_{1}$and $m_{2}$are moving in circles of radii $r_{1}$and $r_{2}$ respectively. Their speeds are such that each makes a complete circle in the same duration of time $t.$The ratio of the angular speed of the first to the second car is
A) $m_{1}:m_{2}$
B) $r_{1}:r_{2}$
C) $1\ :1$
D) $m_{1}:r_{1}:m_{2}r_{2}$
Explanation
(c) As time periods are equal therefore ration of angular speeds will be one.$\ \omega = \frac{2\pi}{T}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.