Question

If `a_(r )` and `a_(t)` respresent radial and tangential acceleration, the motion of a particle will be circualr is
A. `a_(r) = 0` and `a_(t) = 0`
B. `a_(r) = 0` but `a_(t) != 0`
C. `a_(r) != 0` and `a_(t) = 0`
D. `a_(r) !=0` and `a_(t) != 0`

Answer 1

Correct Answer - C::D
In uniform circular motion, `a_(t) = 0`, but in non uniform circular motion, `a_(t) != 0`. In both cases, `a_(r) != 0`.