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A body is moving in vertical circle with...

A body is moving in vertical circle with time period of 40 seconds. If radius is 20cm mass of body is 200 gm then find normal reaction along vertical side of the path is

A

`1 x 10 ^-3 N`

B

`2.5 x 10 ^-3 N`

C

`5 x 10 ^-3 N`

D

`7.5 xx 10 ^-3 N`

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-PHYSICS SECTION B
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