A coin, which is placed on a rotation turn-table, slips when it is placed at a distance of \( 9 ...

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A coin, which is placed on a rotation turn-table, slips when it is placed at a distance of \( 9 \mathrm{~cm} \) from the center. If the angular velocity of the turn-table is tripled, it just slips if its distance from the center is
(A) \( 27 \mathrm{~cm} \)
(B) \( 9 \mathrm{~cm} \)
(C) \( 3 \mathrm{~cm} \)
(D) \( 1 \mathrm{~cm} \)
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