Is the tangential acceleration of a particle moving along a fixed circle be always zero? When it will be zero?

Is the tangential acceleration of a particle moving along a fixed circ

1.	Is the tangential acceleration of a particle moving along a fixed circle be always zero? When it will be zero?
Answer» Solution :No, when the ANGULAR SPEED of PARTICLE is not constant then its tangential accelertion can not be zero but if the angular speed is constant then its tangential acceleration be zero.