Angular acceleration of a computer disk

[JSapit]

Homework Statement

During normal operation, a computer's hard disk spins at 5400 rpm. If it takes the hard disk 8.4 s to reach this angular velocity starting from rest, what is the average angular acceleration of the hard disk in rad/s2?

Homework Equations

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The Attempt at a Solution

I don't even know where to start. Physics is not my strong point, and I definitely do not like angular physics problems.

 

[blochwave]

See your other topic where I just posted my generic rotational motion advice

With that in mind, remember that 2pi radians/second = 1 revolution per second so you can convert 5400 rpm to rad/sec

So similar to the other problem you have "distance", time, and initial "velocity"(ie angle traveled, time, and initial angular velocity)