The angular acceleration of a body, moving along the circumference of a circle

NEET PG
#1

The angular acceleration of a body, moving along the circumference of a circle, is :

  1. Along the axis of rotation

  2. Along the radius, away from centre

  3. Along the radius towards the centre

  4. Along the tangent to its position

The angular acceleration of a body moving along the circumference of a circle is directed along the tangent to its position.

Option 4) Along the tangent to its position is the correct answer.