What is the difference between g at height and g at depth?
Above the surface g ∝ 1/(R+h)²; below the surface g decreases roughly linearly to zero at the centre.
Above the surface g ∝ 1/(R+h)²; below the surface g decreases roughly linearly to zero at the centre. A reliable way to keep them apart is to focus on what each one is defined by, not just the similar-sounding words.
Key point
g at height vs g at depth
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