Hey guys, I could not understand this question. There weren't enough givens for myself to understand how to get the period.(adsbygoogle = window.adsbygoogle || []).push({});

1. Earth and the Moon are seperated at their centres by a distance of 3.4x10^8m. Determine the period of the Moon's rotation about Earth.

2. mv^2/r=Fc

3. I wasn't sure if MG applies in this question since the mass of the moon wasn't stated although earth does have gravity that keeps the moon in its orbit. I'm assuming something like mass is supposed to be cancelled in the formulas, I just don't know how or which one.

The supposed answer is supposed to be 22.8 days

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# Homework Help: Centripetal force problem ( not enough givens?)

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