ICSE Class 9 Answered
keplier's law of planetary motion
Asked by cavajit | 20 Sep, 2018, 08:11: PM
Expert Answer
Kepler's laws describe the motion of planets around the Sun. He established three laws which govern the motion of planets around the sun.
- he planets move in elliptical orbits around the sun, with the sun at one of the two foci of the elliptical orbit. This means that the orbit or path of a planet around the sun is an ellipse i.e. an oval-shaped and not an exact circle.
- Each planet revolves around the sun in such a way that the line joining the planet to the sun sweeps over equal areas in equal intervals of time.
- The cube of the mean distance of a planet from the sun is directly proportional to the square of time it takes to move around the sun.
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