Write the three laws given by Kepler.
How did they help Newton to arrive at the
inverse square law of gravity?
Answers
Answer:
Kepler's laws apply: First Law: Planetary orbits are elliptical with the sun at a focus. Second Law: The radius vector from the sun to a planet sweeps equal areas in equal times. Third Law: The ratio of the square of the period of revolution and the cube of the ellipse semimajor axis is the same for all planets.
Answer:
Kepler's laws apply: First Law: Planetary orbits are elliptical with the sun at a focus. Second Law: The radius vector from the sun to a planet sweeps equal areas in equal times. Third Law: The ratio of the square of the period of revolution and the cube of the ellipse semimajor axis is the same for all planets.
Explanation:
In Newton's Principia it was demonstrated that Kepler's first law- the planets follow elliptical orbits, with the sun at a focus- implies that gravity follows an 'inverse-square law', under the assumption that it is a an attrac- tive central force directed along a line from the planet to the Sun (that is, towards the