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At large heights decrease in ‘g’ is less than the decrease in ‘g’ at large depths.Why?

At large heights decrease in ‘g’ is less than the decrease in ‘g’ at large depths.Why?

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1 Answers

Yash Baheti IIT Roorkee
askIITians Faculty 97 Points
6 years ago
Hi,

Look at the concept of gravitational fields.
When you travel towards the centre, the M of earth is to be taken which is lying deeper that you. So this means that if you are standing at r/2 (r is radius of earth) than the mass of earth responsible to generate gravitational filed is proportional to r/2, i.e. it will be 1/8th of thetotal mass.

Where as if you move away from earth, whole mass of earth is take to generate the field.

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