Question

What will be the acceleration due to gravity at a distance of 3200 km below the surface of the
earth? (Take R = 6400 km)​

Answer 1

Answer:

4.9 m/s

Explanation:

gravity at a depth "d" is g[1-(d/R)]

Given R= 6400 km

depth d= 3200 km

so,

acceleration due to gravity at a depth of 3200 km is 9.8[1-(3200/6400)]

=> 9.8{1-0.5]

=> 9.8(1/2)

=> 4.9 m/s

Answer 2

Answer:

Explanation:

acceleration due to gravity at a depth h,

g°=g(1-h/R) ,

R= Radius of earth= 6378km ~=6400km ,

g= 9.81m/s2 ~= 10m/s²,

h=3200 km ,

Final acceleration= 10(1–3200/6400) = 10*1/2 = 5m/s².

Hope it helps..