A coin placed on a rotating turntable just slips if it is placed at a distance of 4 cm from centre. If the angular velocity of the turntable is doubled, it will just slip at a distance of:

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Explanation:

The formula of static friction is Fs = mω2r.

Even after the value of angular velocity is doubled, the static friction remains same.

The formula of static friction is Fs = mω2r.

Final Answer:

Hence, option A is correct. (1 cm)

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