Angular acceleration of a computer disk

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SUMMARY

The discussion focuses on calculating the average angular acceleration of a computer hard disk that spins at 5400 rpm, reaching this speed in 8.4 seconds from rest. To find the average angular acceleration, participants emphasize the conversion of 5400 rpm to radians per second, utilizing the relationship that 2π radians equals one revolution. The average angular acceleration can be determined using the formula α = (ω_f - ω_i) / t, where ω_f is the final angular velocity and ω_i is the initial angular velocity.

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  • Understanding of angular velocity and acceleration
  • Familiarity with rotational motion equations
  • Ability to convert units from rpm to rad/s
  • Basic knowledge of kinematics in physics
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This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of angular motion and acceleration in mechanical systems.

JSapit
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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.
 
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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)
 

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