Circular motion is when an object moves around a fixed point in a circular path. This type of motion can be seen in planets orbiting around the sun or a ball spinning around a string.
The planets in our solar system exhibit circular motion as they orbit around the sun. This is due to the gravitational force between the sun and the planets, which keeps them in their respective orbits.
Gravity is essential for circular motion to occur. It is the force that keeps objects moving in a circular path around a central point. Without gravity, objects would continue moving in a straight line and not exhibit circular motion.
The force of gravity between the sun and planets keeps the planets in their orbit. This is because gravity is an attractive force that pulls objects towards each other. The strength of this force is determined by the masses of the objects and the distance between them.
The mass of a planet directly affects its orbit. The greater the mass of a planet, the stronger its gravitational force, which results in a larger orbit. On the other hand, a smaller mass planet will have a weaker gravitational force and a smaller orbit.