Question

Variation of g with changing h as well as due to shape of the earth. Please answer it correct.

Answer 1

Answer:

I will make complications

Answer 2

VARIATION DUE TO SHAPE OF EARTH:

• The earth is an oblate spheroid.
• At the equator, the radius of the planet earth is more than the poles.
• The acceleration due to gravity is inversely proportional to the square of the radius of the earth.
• Hence, g at poles is greater than the equator.

VARIATION DUE TO CHANGING HEIGHT OF EARTH:

• GM/r²
• r=(R+h)
• where R= radius of the earth
• h = height
• Then, g'=GM/(R+h)²
• The value of g decreases with an increase in the height of an object.
• It will become zero at an infinite distance.