- #1
sophixm
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Homework Statement
A computer disk drive is turned on starting from rest and has constant angular acceleration.
If it took 0.680s for the drive to make its second complete revolution, how long did it take to make the first complete revolution? (t=?)
Homework Equations
Θ=(ct^2)/2 (i think)
The Attempt at a Solution
So, since the angular acceleration is constant, I'm assuming α=c (c being a constant).
So then the intergral with respect to time, would be ω=ct, and then Θ=(ct^2)/2
I tried solving for c using 4π(2 revolutions)=(c(.68^2))/2, and got 54.4 for c, and used that to solve for time of one revolution, but this is wrong. I guess what the problem is saying is that it took 0.680 seconds to go from 2π to 4π, so I am stuck