Can someone explain this can't understand notation

  • #1
from wikipedia for
"The most general equation for rotation of a rigid body in three dimensions about an arbitrary origin O with axes x, y, z is"...
13zad5d.jpg



i thought that the sum of the torques on a system is just equal to d/dt(L)=d/dt(Iw)...apparently not - but i can't understand the notation like, what is b, G..etc
 

Answers and Replies

  • #2
cronxeh
Gold Member
974
10
This article explains it better:
http://www.statemaster.com/encyclopedia/Rigid-body-dynamics

I is the moment of inertia tensor
ω is the angular velocity (a vector)
ωq is the angular velocity about axis q.
M is the total mass.
bG/O is the vector from O to the body's center of mass.
RO is the position of O.
t is time.
τO,j is one of the N moments about O.
 

Related Threads on Can someone explain this can't understand notation

  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
17
Views
3K
Replies
1
Views
762
Replies
5
Views
676
  • Last Post
5
Replies
108
Views
67K
Replies
4
Views
707
Replies
9
Views
2K
Replies
3
Views
3K
Replies
5
Views
864
Replies
5
Views
2K
Top