Find Angular Velocity when given Angular Acceleration?

  • #1
Justinclewis94
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Homework Statement


Starting from rest, a spinning compact disk undergoes an angular acceleration of 5.0 rad/s^2. What is the angular speed of the disk after 3 revolutions?

Homework Equations


a=Δω/Δt
ω=Δθ/Δt

The Attempt at a Solution


I do not understand how to solve this equation when I am not given a time. I don't have a radius, so I can't find the circumference either. How can I solve this?
 
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  • #2
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