Two point charges +q are fastened at the bottom corners of an equilateral triangle of side a as shown.
a. Let charge +q be placed at the top corner. It is released from rest while the others remain fixed.
ii. When it is far from the others, what is its kinetic energy? [What are
the initial and final potential energies?]
b. Now let the charge at the top be –q, and again it is released from rest.
i. Describe its motion qualitatively.
ii. What is its maximum kinetic energy? [At what point in the motion is the potential energy the smallest?]