• Support PF! Buy your school textbooks, materials and every day products Here!

How to find average angular velocity?

  • Thread starter kee23
  • Start date
  • #1
17
0

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
Science Advisor
Homework Helper
Gold Member
7,136
476
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
17
0
my bad. the 3rd is 330rev.
Umm I'm not quite follow.
t
 
  • #4
PhanthomJay
Science Advisor
Homework Helper
Gold Member
7,136
476
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....
 

Related Threads for: How to find average angular velocity?

Replies
5
Views
214
  • Last Post
Replies
10
Views
2K
  • Last Post
Replies
2
Views
8K
Replies
1
Views
3K
Replies
2
Views
24K
Replies
1
Views
6K
  • Last Post
Replies
4
Views
9K
Top