1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Cross Product

  1. Nov 13, 2011 #1
    1. The problem statement, all variables and given/known data
    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?


    2. Relevant equations
    L=mvr


    3. 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?
     
  2. jcsd
  3. Nov 13, 2011 #2
    Do a Google search on cross product. Wikipedia will show you how.
     
  4. Nov 13, 2011 #3
    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
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Cross Product
  1. Cross product torque (Replies: 4)

  2. Cross product (Replies: 4)

  3. Cross product (Replies: 10)

  4. Cross Product (Replies: 1)

  5. Cross product (Replies: 2)

Loading...