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!

Calculate cangular momentum vector L

  1. Jun 23, 2012 #1
    1. The problem statement, all variables and given/known data

    calculate the angular momentum vector L

    2. Relevant equations

    r = rr(hat) r=√(xsquared + y squared) r(hat) = <cosθ, sinθ>
    v = r(dot)r(hat) + rθ(dot)θ

    3. The attempt at a solution
    L = mv X r

    I dont know m, how can i calcuate L? please help me
     
  2. jcsd
  3. Jun 24, 2012 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    welcome to pf!

    hi classicphysic! welcome to pf! :smile:
    yes, you do need m!

    so just call it "m", and leave it in the answer :wink:
     
  4. Jun 24, 2012 #3
    i am waiting for the help people...checking it every hour but no body answers it
     
  5. Jun 24, 2012 #4
    tiny-tim answered you already!

    What more do you need?

    And I really don't think this counts as "Advanced Physics". So, wrong forum?
     
  6. Jun 24, 2012 #5

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    hi classicphysic! :smile:
    posting it when the americans are about to go to bed, and the europeans are fast asleep :zzz:, isn't the best time, if you want a quick answer :wink:

    (and posting it in the right forum would make it more likely that the right people see it)

    btw, you don't need to keep checking … you should receive an email notification of each new post in any thread you've posted in :smile:
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook