If earth is supposed to be sphere of rad...

If earth is supposed to be sphere of radius R, if `g_(20)` is value of acceleration due to gravity at latitude of `30^(@)` and g at the equator, then value of `g-g_(30^(@))` is

A

`(1)/(4)omega^2R`

B

`(3)/(4)omega^2` R

C

`omega^2` R

D

`(1)/(2)m omega` R

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