Question

Derive the relation between gravity of Earth and Gravity of moon .

Answer 1

 The primary difference between the gravities of the Earth and the Moon is that the moon’s gravity is weaker due to the moon being smaller in size, whereas, the earth is bigger in size, and has more massive objects that exert more gravity.

Answer 2

Earth's only natural satellite is simply called the Moon because people didn't know other moons existed until Galileo Galilei discovered four moons orbiting Jupiter in 1610. Other moons in our solar system are given names so they won't be confused with each other.