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Question 30704
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Gravitation: g at Depth MCQ

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g at DepthEasyQuestion 30704

Question

At depth d inside the Earth (uniform density), g is:
  1. A
    g(1 + d/R)
  2. B
    g(1 − d/R)
    Correct
  3. C
    g/d
  4. D
    Zero

Correct answer

g(1 − d/R)

Explanation

Inside a uniform Earth, g_d = g(1 − d/R). At the centre (d = R), g = 0. Gravity decreases linearly with depth.

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