Question

Centre of mass of the earth moom lies

Answer 1

Explanation:

This is the case for the Earth–Moon system, in which the barycenter is located on average 4,671 km (2,902 mi) from Earth's center, 75% of Earth's radius of 6,378 km (3,963 mi). When the two bodies are of similar masses, the barycenter will generally be located between them and both bodies will orbit around it.

Answer 2

Earth's radius is about 6,400 kilometers, so the center of mass for the Earth–moon system lies inside the planet, about 1,700 kilometers below the surface. Both Earth and its lunar companion orbit this subterranean point as they follow their joined path around the sun. For the moon that means making broad laps around our planet; for Earth that means a wobble as it makes its journey around the sun.