Question

what will be the value of 'g' at the centre of the earth

Answer 1

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. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2.

Answer 2

its value will zero at the center of the earth