Motion in A Plane

Question: A mass of 2 kg is whirled in a horizontal circle by means of a string at an initial speed of 5 revolutions per minute. Keeping the radius constant the tension in the string is doubled. The new speed is nearly



1) 14 rpm
2) 10 rpm
3) 2.25 rpm
4) 7 rpm
Solution: Explanation: Explanation

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