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- Homework Statement
- Please see below

- Relevant Equations
- Please see below

For this part (b) of this problem,

The solution is,

However, would a better explanation be:

As the spheres are conductors, there will be free electrons within and on the surface of the conductors that will be polarized by the external electric field between the conductor. This will decrease the effective distance between the centers of charge (won't affect net charge of sphere; only where charge is distributed locally within the sphere). Therefore, the spheres will be closer together that ##r_1 + r_2## so more electric potential energy will be converted to kinetic energy.

Thank you!

The solution is,

However, would a better explanation be:

As the spheres are conductors, there will be free electrons within and on the surface of the conductors that will be polarized by the external electric field between the conductor. This will decrease the effective distance between the centers of charge (won't affect net charge of sphere; only where charge is distributed locally within the sphere). Therefore, the spheres will be closer together that ##r_1 + r_2## so more electric potential energy will be converted to kinetic energy.

Thank you!