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NEET2023PhysicsLaws of MotionActual

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

Options

  1. Aalong the axis of rotation
  2. Balong the radius, away from centre
  3. Calong the radius towards the centre
  4. Dalong the tangent to its position

Correct answer

A. along the axis of rotation

Step-by-step solution

In terms of linear acceleration it is given as, a → = α → × r → . Clearly direction of linear acceleration is perpendicular to both angular acceleration and radius vector. Angular acceleration of a body, moving along the circumference of a circle is along the axis of rotation.

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