Mathematics · Gravitation
At a certain depth 'd' below the surface of the Earth, the value of the acceleration due to gravity becomes four times its value at a height of 3R above the Earth's surface, where R is the radius of the Earth. Taking R = 6400 km, the depth d is equal to:
- 13200 km
- 22560 km
- 34800 km✓
- 45260 km
Correct answer
4800 km
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