Question

How does gravity decreases with increase in altitude?

Answer 1

Gravity

1. Gravity is defined as the force with which an object having a particular mass is constantly pulled towards the centre of the earth.
2. This force causes a freely falling body to undergo an acceleration which is equal to $9.8m{s}^{-2}$.

Relation between gravity and altitude:

1. We know that gravitational force is inversely proportional to the distance between the two bodies.
2. Earth's gravity depends on the distance between the centre of the earth and the object on the surface of the earth.
3. As the altitude increases, the distance from the centre of the earth increases.
4. Therefore, the gravity decreases as it the inversely proportional to the distance.

Hence, gravity decreases with an increase in altitude.