Using F = G * (m(adsbygoogle = window.adsbygoogle || []).push({}); _{1}*m_{2})/(r^{2})

We know that

G = 6.6673x10^{-11}N*m^{2}/kg^{2}

m1(earth) = 6x10^{24}kg

m2(moon) = 7.4x10^{22}kg

the earth and moon are an average of 3.9x10^{8}m apart

would r^{2}be [3.9x10^{8}]^{2}or [3.9x10^{8}/ 2]^{2}?

-Thanks!

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# Homework Help: Universal gravitation - radius?

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