1.

c. Write the three laws given by Kepler.How did they help Newton to arrive at theinverse square law of gravity?

Answer»

1. The Law of Orbits: All planets move in elliptical orbits, with the sun at one focus.

2. The Law of Areas: A line that connects a planet to the sun sweeps out equal areas in equal times.

3. The Law of Periods: The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.



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