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[" A coin placed on a rotating turn- tab...

[" A coin placed on a rotating turn- table slips,when it is placed at a distance of 9"cm" from "],[" the centre.If the angular velocity of the turn-table is tripled,it will just slip,if its distance "],[" from the centre is "],[" O "27cm],[" O "9cm],[" O "3cm],[" D "1cm]

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