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A bob of mass 100g tied at the end of a ...

A bob of mass 100g tied at the end of a string of length 50cm is revolved in a vertical circle with a constant speed of `1ms^(-1)`. When the tension in the string is 0.7N, the angle made by the string with the vertical is `(g= 10 ms^(-2))`

A

`0^(@)`

B

`90^(@)`

C

`180^(@)`

D

`60^(@)`

Text Solution

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The correct Answer is:
D
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