Q. If $a_{r}$ and $a_{t}$ represent radial and tangential accelerations, the motion of a particle will be uniformly circular if
A) $a_{r} = 0,a_{t} = 0$
B) $a_{r} \neq 0,a_{t} \neq 0$
C) $a_{r} \neq 0,a_{t} = 0$
D) $a_{r} = 0,a_{t} \neq 0$
Explanation
(c) For uniform circular motion $a_{t} = 0$
$a_{r} = \frac{v^{2}}{r} \neq 0$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.