A particle is acted upon by only two forces, one conservative and one nonconservative, and neither being a forceof friction, as it moves from point A to point B. The kinetic energies of the particle at points A and B are equal if .

The kinetic energies of the particle at points A and B are equal if both forces are constant force

Explanation:

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach