How much below the Earth's surface the value of g reduces to 30% of its value at the surface of earth? Radius of earth = 6,400 km.

How much below the Earth's surface the value of g reduces to 30% of it

1.	How much below the Earth's surface the value of g reduces to 30% of its value at the surface of earth? Radius of earth = 6,400 km.
Answer» ANSWER :4,480 KM