Question

How does the value of gravity vary as you go:

i. above the earth surface?
ii. below the earth surface?
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Answer 1

Gravity changes with altitude. as we know The gravitational force is proportional to 1/R2, where R is your distance from the center of the Earth.

eg. The radius of the Earth at the equator is 6400 kilometers.

Let's say you were in a jet at the equator that was 40 kilometers high above the earth's surface.

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