The coin placed on a revolving disc,with its centre at distance of 6cm from the axis of rotation just slips off when the speed of the be the maximum angular speed of the revolving disc exceeds 45rpm .What should be the maximum angular speed of the disc ,so that when the coin is at a distance of 12cm from the axis of rotation , it does not slip?

The coin placed on a revolving disc,with its centre at distance of 6cm

1.	The coin placed on a revolving disc,with its centre at distance of 6cm from the axis of rotation just slips off when the speed of the be the maximum angular speed of the revolving disc exceeds 45rpm .What should be the maximum angular speed of the disc ,so that when the coin is at a distance of 12cm from the axis of rotation , it does not slip?
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