What is the source of centripetal force that a planet requires to revolve around the Sun? On what factors does that force depend?
Q. What is the source of centripetal force that a planet requires to revolve around the Sun? On what factors does that force depend?
Ans. It is the gravitational force of attraction between the planet and the sun. It depends directly upon the product of the masses of the sun and the planet and inversely on the square of the distance between their centres.
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