Question

Motion of hand of a runner :.........................,Note the type of motion associated with the given example.

Answer 1

The motion of the hand of a runner is pendulum motion. This type of motion is associated with the given example.

The runner's hand is like a pendulum when the pendulum displaced right and left or front and back, so the runner hand motion is called pendulum motion.

If the runner in exercise time means hand motion is like circular motion but running time means pendulum motion.

Answer 2

Motion of hand of a runner shows $\textbf{periodic motion }$.

We can say it is in the periodic motion because, the hand of the runner moves two and for about its shoulder.