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Homework Help: 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

    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
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