Question

compare the weight of a body when it is
• 1 km above the surface of earth
• 1 km surface below the earth
given ,R = 6400 Km​

Answer 1

Answer:

The weight of the body will be more at a depth of 1 km.

Explanation:

Let's take height h as 1km above the surface of the earth. And take depth h as 1km below the earth.

Acceleration due to gravity at a height h is

g' = g[1 - 2h/R]

Acceleration due to gravity at depth h is

g'' = g[1 - h/R]

From the above two equations it's clear that acceleration due to gravity at depth h is more than that at height h

Therefore the weight of the body will be more at a depth of 1 km.