Posted by **ED** on Wednesday, October 12, 2011 at 9:44pm.

The earth orbits the sun once every 365.24 days. The distance between the earth and sun is 1.49x 10^8 Km. The mass of the earth is 5.96 x 10 ^24 kg. A) Find the magnitude in newtons of the centripetal force acting on the earth. The mass of mars is 6.56 x 10 ^23 Kg and the distance between Mars and the sun is 2.27 x 10 ^8 km. B) Use Keplers third law to find the period of Mars in Earth days.C) Find the magnitude in Newtons of the centripetal force acting on Mars.

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