I have been given that this planet has a diameter of 1600km with a uniform density of 52000 per cubic metre. And if its moon is in a geostationary orbit around the planet and assuming that the sidereal is exactly 24 hours. How far is the geostationary orbit above the surface of the planet. And i need the answer in km.(adsbygoogle = window.adsbygoogle || []).push({});

I'm stuck in getting the mass of the planet as so far i have

radius of the geostationary orbit = cubed root of (GM_{p}T^{2}_{p}over 4 pi^{2})

so therefore the radius = cubed root of (6.6742 x 10^{-11}x (mass of the planet which i do not know how to find out x 86400^{2}all over 4 pi^{2})

some help would be much appreciated

thanks

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# Homework Help: Working out the geostationary orbit

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