Question

At what distance below the surface of the earth the acceleration due to gravity decrease 10%of its value of at the surface, given radius earth is 6400km ​

Answer 1

640 km below earth surface acceleration due to gravity decrease by 10% of its surface.

The acceleration due to gravity decrease by 10% of its value at the surface. R is radius of earth.

**At the depth below the surface of the earth acceleration due to gravity g will be half its value at 1600 km above the surface of the Earth is.

**where d represents the distance from the center of the object to the center of the earth. In the first equation above, g is referred to as the acceleration of gravity. Its value is 9.8 m/s2 on Earth.