Physics

The key is connecting rotational and linear motion through the radius. Every point on a spinning object travels in a circle, and the farther from the axis, the faster it must move linearly to keep up with the rotation. Use the relationship $v = \omega r$, where $\omega$ is the angular speed and $r$ is the distance from the axis—the rim point is at maximum distance, so it has maximum linear speed.

The key is connecting rotational and linear motion through the radius. Every point on a spinning object travels in a circle, and the farther from the axis, the faster it must move linearly to keep up with the rotation. Use the relationship $v = \omega r$, where $\omega$ is the angular speed and $r$ is the distance from the axis—the rim point is at maximum distance, so it has maximum linear speed.