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A body of mass 1 kg is tied to a string ...

A body of mass 1 kg is tied to a string and revolved in a horizontal circle of radius 1 m. The maximum number of r.p.m made so that the string does not break is ? Breaking tension of the string is 9.86 N

A

60 rpm

B

30 rpm

C

20 rpm

D

10 rpm

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The correct Answer is:
B
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