NEET Physics Question - Circular Motion - Kinematics of Circular Motion

Assertion (A): In uniform circular motion, angular acceleration is zero.

Reason (R): In uniform circular motion, acceleration is constant.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Assertion (A) is true because angular speed \(omega\) is constant, thus \(alpha = domega/dt = 0\). Reason (R) is false; in uniform circular motion, the *magnitude* of acceleration is constant, but its *direction* continuously changes, so the acceleration vector is not constant.

Rankers Physics

Uniform Circular Motion Acceleration

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