When an object is dropped from some height, a uniform acceleration is produced in it by the gravitational pull of earth and this acceleration does not depend upon the mass of falling body. This uniform acceleration is called acceleration due to gravity.

The acceleration due to gravity is represented by ‘g’ and its value is 9.8 ms^-2.

The value of g changes slightly from place to place.

Where, G = Gravitational Constant

M = Mass of Earth

R = Radius of Earth