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A circular disc is rotating with constant angular velocity ω about an axis that passes through the centre. A particle 'P' is kept at a distance of 2m from the centre and another particle 'Q' at a distance of 3m from the centre.
Which of these will have higher centripetal acceleration?
A .  P
B .  Q
C .  both have equal
D .  can't say until value of ω is given
Answer: Option B
If a particle goes in a circle with constant ω then it has a centripetal acceleration given by ω2R since ω is constant for both particles. So the acceleration depends on R
So particle q will have higher centripetal acceleration.

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