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MHT CET202520 Apr 2025Morning ShiftPhysicsMotion in Two DimensionsActual

For a particle moving in a circle with constant angular speed, which of the following statements is 'false'?

Options

  1. AThe velocity vector is tangent to the circle.
  2. BThe acceleration vector is tangent to the circle.
  3. CThe velocity and acceleration vectors are perpendicular to each other:
  4. DThe acceleration vector points to the centre of the circle.

Correct answer

B. The acceleration vector is tangent to the circle.

Step-by-step solution

A: The velocity vector is tangent to the circle in all curvilinear motion, including circular motion. This holds for uniform circular motion. B: The acceleration vector points radially inward as centripetal acceleration, not tangent to the circle. Only a tangential acceleration component would exist if angular speed were changing, which it is not. C: Since velocity is tangent and acceleration is radial, they are perpendicular at every point. D: Uniform circular motion produces purely centripetal acceleration direct

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