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A rod of length 50cm is pivoted at one e...

A rod of length 50cm is pivoted at one end. It is raised such that if makes an angle of `30^(@)` from the horizontal as shown and released from rest. Its angular speed when it passes through the horizontal (in rad`s^(-1)`) will be (`g=10ms^(-2)`)

A

`sqrt((30)/(2))`

B

`sqrt(30)`

C

`sqrt((20))/(3)`

D

`sqrt((30))/(2)`

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