Question

What is the angular acceleration of a wheel if the wheels of a car increase their rate of rotation from 1.0rev/s to 8.0 rev/s in 30s.

Answer 1

Angular acceleration 

\(\alpha = \frac{d\omega}{dt}\)

\(= \frac{(\omega_2 - \omega_1)}t\)

\(= \frac{8 - 1}{30}\)

\(\alpha = \frac 7{30}\) rev/s²