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A light semi cylindrical gate of radius ...

A light semi cylindrical gate of radius R is pivoted aat its mid point O, of radius R as shown in the figure holding liquid of density `rho`. The force F required to prevent the rotation of the gate is equal to

A

`2piR^(3)rhog`

B

`2rhogR^(3)l`

C

`(2R^(2)lrhog)/(3)`

D

None of these

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Verified by Experts

The correct Answer is:
D
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