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A 2 kg stone at the end of a string 1 m...

A 2 kg stone at the end of a string 1 m long is whirled in a vertical circle at a constant speed. The speed of the stone is `4 m//sec` . The tension in the string will be 52N, when the stone is

A

At the top of the circle

B

At the bottom of the circle

C

Halfway down

D

None of the above

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