Imagine that two identical steel spheres, each having a mass of 1.0 kg, are placed a certain distance apart. They are given an equal charge q such that when the seperation between the objects changes, the change in the gravitational potentail energy between the objects is exactly balanced by an opposite charge in the electrostaic potential energy between the objects.(adsbygoogle = window.adsbygoogle || []).push({});

What is q?

I used both formulas; V(r) = +k q1q2/r, and V(r)= -G m1m2/r

I then set the two equal to each other and solved for q.

Should this method yield the correct answer?

thanks

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# Homework Help: Potential E

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