Linear Speed in Uniform Circular Motion – Rankers Physics

Uniform Circular Motion: Practice Problem & Solution

Assertion (A): In uniform circular motion of a body, its linear speed remains constant. Reason (R): In uniform circular motion total acceleration of the body has no radial component.  
(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)
(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(3) (A) is true but (R) is false
(4) Both (A) and (R) are false

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Uniform Circular Motion. Understanding the underlying formula is key to arriving at the correct answer below:

By definition, uniform circular motion means constant linear speed. So (A) is true. In UCM, the only acceleration is centripetal, which is entirely radial and directed towards the center. So (R) is false.

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