When a pendulum is at its lowest point, what type of energy is predominantly present?

At the lowest point of a pendulum's swing, the pendulum has converted the gravitational potential energy it had at its highest point into kinetic energy. At this position, the pendulum is moving at its fastest, which reflects the maximum kinetic energy.

Throughout its motion, the pendulum's energy transformation is an important concept in mechanics. As it swings down from its highest point, it accelerates due to gravity, resulting in an increase in speed and thus an increase in kinetic energy. At the very bottom, all the potential energy that was present at the top has been transformed into kinetic energy.

Potential energy is highest at the extremes of the swing, where the pendulum is momentarily at rest before moving back down, and this energy is due to its height above the lowest point. However, at the lowest point specifically, kinetic energy is dominant. This is why at that position, the pendulum exhibits maximum kinetic energy rather than potential energy or any of the other less relevant forms like nuclear or sound energy.