The free fall acceleration g increases as one proceeds at sea level, from the equator towards either pole. The reason is
- Aearth is a sphere with same density everywhere
- Bearth is a sphere with different density at the polar regions than in the equatorial regions
- Cearth is approximately an ellipsoid having its equatorial radius greater than its polar radius by 21 km
- Dearth is approximately an ellipsoid having its equatorial radius smaller than its polar radius by 21 km.
✓ Correct answer: C
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