Finding angular acceleration from revolutions and velocity

  • #1
hpthgpjo
2
0

Homework Statement


an object starts from rest and has a final angular velocity of 6 rad/s. the object makes 2 complete revolutions. find the object's angular acceleration.

Homework Equations


wf^2=wi^2+2αd

The Attempt at a Solution


Not sure what to do with the revolutions, would it take act as the distance traveled? I am not given the radius, so the most I can do is:
6^2=0+2α(2rev*2π)
α=1.43rad/s^2
I'm not given the answer for this question so I am not sure if I am right or extremely wrong
 

Answers and Replies

  • #2
haruspex
Science Advisor
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Homework Statement


an object starts from rest and has a final angular velocity of 6 rad/s. the object makes 2 complete revolutions. find the object's angular acceleration.

Homework Equations


wf^2=wi^2+2αd

The Attempt at a Solution


Not sure what to do with the revolutions, would it take act as the distance traveled? I am not given the radius, so the most I can do is:
6^2=0+2α(2rev*2π)
α=1.43rad/s^2
I'm not given the answer for this question so I am not sure if I am right or extremely wrong
Looks good.
 
  • #3
hpthgpjo
2
0
alright thank you!
 

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