Practice question
Question
In uniform circular motion, what is the relationship between centripetal acceleration (ac) and angular speed (ω)?
Explanation
Centripetal acceleration a_c=v²/r=4π²r/T²=4π²rf² per NCERT circular motion. Substituting r and frequency/period gives a_c value matching ac∝ω2. Other options use incorrect r or f, so D is correct.