If earth is supposed to be a sphere of radius R, if g30 is value of acceleration due to gravity at latitude of 30o and g at the equator, the value of g−g30o is
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a
14ω2R
b
34ω2R
c
ω2R
d
12ω2R
answer is B.
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Detailed Solution
Acceleration due to gravity at latitude l is given byg′=g−Rω2cos2λAt 30o, g30°=g−Rω2cos230o=g−34Rω2∴g−g30=34ω2R