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Question

If g on the surface of the earth is 9.8/ms2, its value at a depth of 3200 km (Radius of the earth=6400 km) is
  1. 9.8/ms2,
  2. Zero
  3. 4.9/ms2,
  4. 2.45/ms2,

A
9.8/ms2,
B
Zero
C
4.9/ms2,
D
2.45/ms2,
Solution
Verified by Toppr

gd=g(1dR)
9.8(13200×1036400×103)
4.9m/s2

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