How to find average angular velocity?

  • Thread starter kee23
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  • #1
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Homework Statement


I had a physics lab and we found the 3 trials of revolution in 2 min then the result came as 1st=344rev
2nd=332rev
3rd=330rev
(These numbers is from the calculation of Final (2min) - Initial start)
Then it asked to find the average angular velocity for three of results.


Homework Equations


1 rev= 2pi rad/60s


The Attempt at a Solution


First I added all the revolutions 344+332+330 then converted to get average angular v
1006rev/2min*2*pi(rad)/60s= 52.7rad/s
Did I got it right?
EDITED
 
Last edited:

Answers and Replies

  • #2
PhanthomJay
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I am not sure what is spinning, but why is your 3rd trial value so high?? The average number of revolutions is the sum of the revolutions divided by three; once you get this average, then the average angular velocity is per your equation, but with the corrected value for the average number of revolutions inserted therein.
 
  • #3
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my bad. the 3rd is 330rev.
Umm I'm not quite follow.
t
 
  • #4
PhanthomJay
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my bad. the 3rd is 330rev.
Umm I'm not quite follow.
t
you stated
First I added all the revolutions 344+332+330
why are you adding them...to find the average, you add them and divide by 3.... if 3 friends are 6,7, and 8 years old, their average age is (6 + 7 + 8)/3 = 21/3 = 7 years old, right? So use your average revs in the last equation and you should get the right answer for the average angular velocity based on the three trials....
 

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