Question

A disk with a radius of 0.1 m is spinning about its center with a constant angular speed of 10 rad/sec.

What are the speed and magnitude of the acceleration of a bug clinging to the rim of the disk?

Answer 1

The speed:

$$v=\omega r=10·0.1=1\text{ m/s}.$$

The magnitude of angular acceleration:

$$a=\omega^2r=10^2·0.1=10\text{ m/s}^2.$$