A box weighs 196 N on a spring balance at the north pole. Its weight recorded on the same balance if it is shifted to the equator is close to (Take g=10 ms−2 at the north pole and the radius of the earth = 6400 km)
(a) 194.66 N
(b) 195.66 N
(c) 194.32 N
(d) 195.32 N