Earth attracts the object which lies near to its exterior surface using its gravitational attraction. There exists a direct relation between the objects surrounding the surface of earth and the gravitational acceleration.

g - denotes the Earth's surface
r - denotes the Outside Radius of Earth
r_{e} - denotes the Earth Radius
g'- denotes the acceleration due to gravity

Consider that acceleration due to gravity at the Earth's surface (g) as 10, radius of the Earth (re) as 12 and the radius outside the earth (r) as 10. How to compute the acceleration due to gravity?

Earth's surface (g) = 10
Earth's radius (r_{e}) = 12
Outside Radius of Earth (r) = 10

Acceleration due to gravity of outside Earth

Let us calculate the value of acceleration due to gravity.
Substitute the values in the formula,
g' = ( r_{e}^{2} / r^{2}) * g.
g' = (12 / 10) x 10
g' = (144/100) x 10) = 12
g' = 1.44 x 10
g' = 14.4