If .g. on the surface of the earth is 9.8 ms^(-2), find its value at a depth of 3200km (radius of the earth = 6400km)

If .g. on the surface of the earth is 9.8 ms^(-2), find its value at a

1.	If .g. on the surface of the earth is 9.8 ms^(-2), find its value at a depth of 3200km (radius of the earth = 6400km)
Answer» SOLUTION :with d=3200 KM `g_d=g[1-d/R] RARR g_d=4.9 MS^(-2)`