A body weighs \( 49 \, \text{N} \) 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 \(g= \frac{GM}{R^2} = 9.8 \, \text{m s}^{-2} \) and radius of earth, \( R = 6400 \, \text{km} \)]
