Question

The value of acceleration due to gravity depends on the radius of the Earth. Give reason
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Answer 1

As g=GM/r^2, the value of g is greater at the poles than at the equator. So, the more the radius of the earth, the less is the value of g(acceleration due to gravity).

Answer 2

Answer:

Explanation:

I am quite sure that since you are dealing with the chapter gravitation you must be knowing the inverse square law. It states that the force of gravitation (or any other non contact force) depends on the square of distance between the two bodies. The same is the case with gravitational force. When the bodies move away from the centre of the earth i.e the the radius of planet increases and thus the force becomes weak. Now according to Newton's second law of motion the net force is equal to mass of body and acceleration in the body..thus when the gravitational force decreases the acceleration also decreases...

Hope I have cleared your doubt!