Question

where is the centre of gravity in earth?

Answer 1

Hey, here is your answer

The Earth's centre of Gravity is almost exactly at the centre of it.

HOPE IT HELPS YOU

Answer 2

Zero gravity, it is position of the center of gravity depends upon the distribution of mass. It may not be at the geometric center. But the earth being a very big object and human can make neglible impact on its mass distribution and it was formed through spinning, it's center of gravity should be very close to it's geometric center.