Question

select at what point the pendulum has the greatest kinetic energy? start

Explanation:

Step1: Recall kinetic - energy formula

The kinetic - energy formula is $K = \frac{1}{2}mv^{2}$, where $m$ is mass and $v$ is velocity.

Step2: Analyze pendulum motion

A pendulum's mass $m$ is constant. Its velocity $v$ is maximum at the lowest point of its swing.

Step3: Determine point of greatest KE

Since $K$ is proportional to $v^{2}$ and $v$ is maximum at the lowest point, the pendulum has the greatest kinetic energy at the lowest point of its motion.

Answer:

The lowest point of the pendulum's swing.