Help on Moment of inertia again thanks =D

  • Thread starter iamtrojan3
  • Start date
  • #1
56
0

Homework Statement


I need one more question answered =D thanks

A man is standing on a spinning turntable with a weight in each hand. His moment of inertia with arms outstretched is 16Nm. WIth his arms by his sdie his moment of Inertia is 6.4Nm. With arms outstreched he makes one rotation in 2 seconds. What is his angular velocity with his arms at his sides?


Homework Equations


i dont' even know where to start on this one


The Attempt at a Solution



none so far:confused:
 

Answers and Replies

  • #2
56
0
no body knows? cry cry cry...
 
  • #3
50
10
Well, you should think if there is a torque acting on the man. If not, something might be conserved. You'll have to find out what, and write the equality between the quantity with arms outstretched and with arms on his side.
 

Related Threads on Help on Moment of inertia again thanks =D

  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
18
Views
5K
  • Last Post
Replies
3
Views
11K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
0
Views
2K
  • Last Post
Replies
1
Views
978
  • Last Post
2
Replies
28
Views
4K
Replies
1
Views
1K
Replies
1
Views
4K
  • Last Post
Replies
3
Views
6K
Top