A small block having charge Q placed on a frictionless horizontal table is attached to one end of a spring of force constant k. The other end of the spring is attached to a fixed support and the spring stays horizontally in relaxed state. Another small block carrying a negative charge -q is brought very slowly from a great distance towards the former block along the line coinciding the axis of the spring. Find extension in the spring when both the blocks collide. 1-3 (Q2 2 イくe

A small block having charge Q placed on a frictionless horizontal table is attached to one end of a spring of force constant k. The other end of the spring is attached to a fixed support and the spring stays horizontally in relaxed state. Another small block carrying a negative charge -q is brought very slowly from a great distance towards the former block along the line coinciding the axis of the spring. Find extension in the spring when both the blocks collide. 1-3 (Q2 2 イくe