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Old Jul 16th 2014, 10:45 PM   #1
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Smile Using the equation below, determine the value of the initial speed that will produce

Using the equation below, determine the value of the initial speed that will produce a circular orbit of a satellite at an altitude of 1000 km above the Earth.
v=(Gm2/r)^1/2
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Old Jul 17th 2014, 08:23 AM   #2
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What exactly is your questin? You have a formula, and you should have data in your text book for values of G and M (the Earth's mass). As for the value of 'r' - it's measured from the center of the Earth, so is equal to the satellite's altitude plus the radius of the Earth. Now plug and chug - what do you get for 'v'?

By the way, please check that formula - you have a factor of 2 in there which I don't understand.
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