Question

The force of gravity decrease with altitude it also varies on the eart

Answer 1

Answer:

Gravitational force decreases as distance increases because the further an object is away from the source of the gravitational force the more part of the density of that source is reduced.

Gravity is inversely proportional to the square of the distance that separates the two bodies. Hence gravity will decrease as one will go higher in altitude, and hence away from the center of mass.

Answer 2

Answer:

The first reason is because the Earth is rotating. This means that the gravity of Earth at the equator is 9.789 m/s2, while the force of gravity at the poles is 9.832 m/s2. ... Gravity also decreases with altitude, since you're further away from the Earth's center

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