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Question
Write scientific reason.
The value of gravitational acceleration (g) decreases as we go above the Earth's surface.
Solution
- As the height of an object from the surface of the earth increases, the distance between the object and the centre of the earth (r) increases.
- But, acceleration due to gravity (g) at distance ‘r’ from the centre of earth is given as, g = `"GM"/"r"^2`, therefore acceleration due to gravity (g) decreases with the increase in ‘r’.
- As a result, the value of gravitational acceleration (g) decreases as we go above the earth's surface.
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