Physics

Problem

A flywheel turns clockwise at

10\,\text{rev/s}

and slows uniformly to

4\,\text{rev/s}

while rotating through an additional

30

revolutions clockwise. What is the magnitude of its average angular acceleration during this interval? a)

17.6\,\text{rad/s}^{2}

1.4\,\text{rad/s}^{2}

8.8\,\text{rad/s}^{2}

55\,\text{rad/s}^{2}