A) increases
B) decreases
C) remains the same
D) increases then decreases
Correct Answer: A
Solution :
Key Idea: Equatorial radius is about 21 km larger than polar radius. Earth is not a perfect sphere but some what flat at the two poles. Its equatorial radius is nearly 21 km larger than polar radius. Also the value of g depends upon \[{{R}_{e}}\] (radius of earth) as\[g=\frac{G{{M}_{e}}}{R_{e}^{2}}\] Hence, as we go from equator towards the poles the radius \[{{R}_{e}}\]goes on decreasing and hence the value of g goes on increasing.
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