A planet moves in an elliptical orbit about the sun


Asked by wiki @ in Biology viewed by 52 People


A planet moves in an elliptical orbit around the sun. The mass of the sun is Ms. The minimum and maximum distances of the planet from the sun are R1 and R2, respectively.

Using Kepler's 3rd law and Newton's law of universal gravitation, find the period of revolution P of the planet as it moves around the sun. Assume that the mass of the planet is much smaller than the mass of the sun.
Use G for the gravitational constant.

Answered by wiki @



Even though im not giving you the whole answer im going to give you such a help that i know you will be able to fix this.Ok so let me state that  Kepler's third law states the square of the period is proportional to the cube of the average distance. So for that the formula you need is: T = sqrt { 4 * PI^2 /(GM) * [(R1 + R2)/2]^3 } 
I knoe this is going to help so that you can get through. 

Do you know the better answer?

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