Homework Help: Physics

Posted by Nikita on Monday, October 26, 2009 at 1:20pm.

A satellite orbits at an average altitude of h = 409 km. What is its orbital speed? Use REarth = 6370 km and
mEarth = 5.98 x 10^24 kg

Physics - bobpursley, Monday, October 26, 2009 at 2:00pm
set centripetal force = gravitational force

GMm/(r+h)^2=mv^2/(r+h)

v= 2PI (r+h)/24hrsinSeconds

change all kilometers to meters. Watch units.
Physics - randy, Monday, October 25, 2010 at 7:48pm
can you please explain the v=...part i don't understand what you mean by 24hrsinseconds?
Physics - Anonymous, Thursday, October 28, 2010 at 11:13am
is GMm gravity (9.81) multiplied by the mEarth?

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