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A stone of mass m is tied to a string an...

A stone of mass `m` is tied to a string and is moved in a vertical circle of radius `r` making `n` revolution per minute. The total tension in the string when the stone is its lowest point is.

A

`mg`

B

`m(g+pi nr^(2))`

C

`m(g+pi nr)`

D

`m{g+(pi^(2)n^(2)r)//900}`

Text Solution

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The correct Answer is:
D
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