Question

Why does the moon have less gravity and how does the moon stay in orbit?

Answer 1

Gravity is a type of attraction force which can pull the two objects towards each other. Any objects which has mass, there has a gravity force, the higher mass has high gravity force and less mass has low gravity force. The formula of the gravity force is -

F=GMm/r², where G=Gravitational constant, M=Mass of one objects, m= mass of another objects and r= distance between the two objects.

Therefore the moon has a mass so moon has gravity force but the mass is less compared to the earth so the gravity force is less.

The moon not still which constantly revolve around the earth. Without the earth's gravity force, the moon don't moves around the earth, it would be just floats away into the space so earth gravity force has an important role. Another way the moon can escape and fall if the gravity force of the earth is less/ greater with compared to the moon velocity but in this case the mixup of velocity and the distance from the earth which balance between the moon escape and fall. Other wise if it was faster than would escape and if slower then it would fall.