Practice question
Question
An object in uniform circular motion has a period of 2s and a radius of 8m. What is its centripetal acceleration?
Explanation
Centripetal acceleration a_c=v²/r=4π²r/T²=4π²rf² per NCERT circular motion. Substituting r and frequency/period gives a_c value matching 2. Other options use incorrect r or f, so A is correct.
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