A satellite orbits earth with T= 5.1 x 10^3 s. What is the value for g at this point.(adsbygoogle = window.adsbygoogle || []).push({});

some constants i found:

Mass of earth = 5.98 x 10^24lg

r of earth = 6.38 x10^6m

I realize that because the T is pretty small that the value for g will be close to 9.8. This is what i can think of

Gmemo / r^2 = mg

Gme / r^2 = g

and

Fc = mo4pie^2r / T^2

Since Fc = Fg

mg = mo4pie^2r / T^2

thus g = 4pie^2r / T^2

i tried subbing the equations together to get r and from that get g but it seems to me like im doing it wrong. Its only a multiple choice problem so i dont see why it would be so complicated (if infact its done they i showed).

Thank for any help

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# Homework Help: Centri force with Fg

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