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Question

A stone of mass of 16 kg is attached to a string 144 m long and is whirled in a horizontal circle. The maximum tension the string can withstand is 16 Newton. The maximum velocity of revolution that can be given to the stone without breaking it, will be


A

20 ms1

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B

16 ms1

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C

14 ms1

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D

12 ms1

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Solution

The correct option is D

12 ms1


Maximum tension =mv2r=16N
16×v2144=16v=12m/s


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