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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 – g30°is        

(a)  ( 1/4 ) ω2R                          (b) (3/4)ω2R

(c)  ω2R                                    (d) (1/2 )ω2R

Answer:  b

(24)

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