The motion of the moon around the earth is due to ________-

Question

Question

This question was previously asked in

RRC Group D Previous Paper 65 (Held On: 24 Oct 2018 Shift 1)

Answer 1

The correct answer is Gravitational force.

Key Points

The gravitational attraction provides the centripetal force needed to keep planets in orbit around the Sun and all types of satellites in orbit around the Earth.
The Earth's gravity keeps the Moon orbiting us. It keeps changing the direction of the Moon's velocity.
The moon has two movements, the first is that it will revolve around itself in its own axis and the second, it will move around the Earth.
The moon takes 30 days to move around the Earth and it can be observed in the sky for 15 days and another 15 days it will be another side of the Earth that we cannot see.

Additional Information

Centrifugal force:
- Centrifugal force is a pseudo force in a circular motion which acts along the radius and is directed away from the center of the circle. The force does not exist when measurements are made in an inertial frame of reference.
Centripetal force:
- A centripetal force is a force that makes a body follow a curved path. Its direction is always orthogonal to the motion of the body and towards the fixed point of the instantaneous centre of curvature of the path.
Nuclear force:
- The nuclear force is a force that acts between the protons and neutrons of atoms. Neutrons and protons, both nucleons, are affected by the nuclear force almost identically.