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Length of a simple pendulum is 2m and ma...

Length of a simple pendulum is 2m and mass of its bob is 0.2 kg. If the tension in the string exceeds 4N, it will break. If the bob is whirled in horizontal plane, the maximum angle the string can make with vertical during rotation is

A

`30^@`

B

`45^@`

C

`60^@`

D

`90^@`

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The correct Answer is:
C
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