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