(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Supppose that electrical attraction, rather than gravity were responsible for holding the moon in orbit around the earth. If equal and opposite charges Q were placed on the earth and the Moon, What should be the value of Q to maintain the present orbit?

Treat the Earth and Moon as point particles

2. Relevant equations

Mass of earth: 5.97x10^{24}kg

Mass of moon: 7.35x10^{22}kg

radius of orbit: 3.84x10^{8}m

Fg=Gm_{1}m_{2}/ d^{2}

Fe= kq_{1}q_{2}/ d^{2}

3. The attempt at a solution

Well I know to start by finding the force of gravity, but from there i am unsure about how to do this problem. Could someone please help?

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# Homework Help: The Earth and the Moon

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