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!

Torque and angular momentum for a Particle in a Force Field

  1. Apr 17, 2008 #1
    [SOLVED] Torque and angular momentum for a Particle in a Force Field

    Find A) the torque and B) the angular momentum about the origin at the time t=3 for a particle in a Force Field F=(3t^2 -4t)i + (12t -6)j + (6t - 12t^2)k. Assuming that t=0 is located at the origin.


    I equated r"=F then took r X F is this the proper way? Then took r X v to find angular momentum. Any help would be appreciated.
     
  2. jcsd
  3. Apr 17, 2008 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    Yes, that's the right way. Solve the differential equation r''=F and find v and r at t=3. You not only need to assume r(0)=(0,0,0), you need some initial condition for r'(0). Is it also (0,0,0)?
     
  4. Apr 18, 2008 #3
    Thanks for the confirmation
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Torque and angular momentum for a Particle in a Force Field
Loading...