Question: A uniformly charged thin ring has radius 13.5cm and total charge 22.5nC. An electron is placed on the ring's axis a distance 30.0cm from the center of the ring and is constrained to stay on the axis of the ring. The electron is then released from rest.
Part A: Find the speed of the electron when it reaches the center of the ring.
I need help to determine the speed of the electron when it reaches the center of the ring.