A body weighs 49 N on a spring balance at the north pole. What will be its weight recorded on the same weighing machine, if it is shifted to the equator ?
(Use g = GM/R2 9.8 ms⁻² and radius of earth, R = 6400 km.]
(1) 49 N
(2) 48.83 N
(3) 49.83 N
(4) 49.17 N