SOLAR SYSTEM

Detailed explanation-1: -The greater the size of the masses, the greater the size of the gravitational force (also called the gravity force). The gravitational force weakens rapidly with increasing distance between masses.

Detailed explanation-2: -The Sun has a much bigger mass. It has the strongest gravitational pull of all the objects in our Solar System. It pulls all eight planets towards its centre and keeps them in their orbits.

Detailed explanation-3: -Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.

Detailed explanation-4: -so that, for fixed mean density, the surface gravity g is proportional to the radius r. Since gravity is inversely proportional to the square of the distance, a space station 400 km above the Earth feels almost the same gravitational force as we do on the Earth’s surface.