Question
State Kepler’s laws of planetary motion.
Solution
Kepler's Law of planetary motion states that:
1. First law: All the planets revolve around the sun in an elliptical orbit with the sun at one focus.
1. First law: All the planets revolve around the sun in an elliptical orbit with the sun at one focus.
2. Second law: Ariel velocity of the planet is constant.
3. Third law: Square of the time period of one complete revolution is directly proportional to the cube of the semi-major axis of the elliptical orbit.
