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

Cross Product

  • Thread starter mrshappy0
  • Start date
  • #1
99
0

Homework Statement


For the general case. I need help finding the cross product for the angular momentum. Say you have a particle at a position r= xi+yj+zk with a velocity of xi+yj+zk and a known mass. How do you find the angular momentum?


Homework Equations


L=mvr


The Attempt at a Solution



So I know how to find the cross product of r and v. It will be some xi+yj+zk. Then how do you find the angular momentum from there?
 

Answers and Replies

  • #2
374
1
Do a Google search on cross product. Wikipedia will show you how.
 
  • #3
390
1
Since angular momentum is [itex] L = \vec{r} \times m\vec{v} [/itex] and you know how to find [itex] \vec{r} \times \vec{v} [/itex] just multiply by m
 

Related Threads on Cross Product

  • Last Post
Replies
2
Views
910
  • Last Post
Replies
1
Views
1K
  • Last Post
2
Replies
30
Views
1K
  • Last Post
Replies
4
Views
449
  • Last Post
2
Replies
31
Views
6K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
10
Views
3K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
3
Views
19K
  • Last Post
Replies
3
Views
2K
Top