Answer: Increase.
- A Increase
- B Decrease
- C Stay same
- D Become zero
Correct answer: A. Increase
Explanation: Earth's rotation causes centrifugal effect that slightly reduces apparent weight. Without rotation, weight = mg (true weight, slightly more).
g is maximum at Earth's surface; going up, it falls off as 1/r² (inverse-square); going down, it falls off linearly with depth (since only the mass enclosed within radius r contributes), reaching zero at the centre.
Concept context
Universal gravitation, orbital mechanics, gravitational potential, and escape velocity.