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A one kg mass attached at one end of the...

A one kg mass attached at one end of the string of 0.5 m long rotates in a horizontal circle when the other end of the string being fixed. The breaking tension of the string is 50 N. The greatest speed that can be given to the mass is,

A

25 m/s

B

5 m/s

C

2.5 m/s

D

5 cm/s

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The correct Answer is:
B
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