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Homework Help: Angular momentum of a particle problem

  1. Dec 9, 2007 #1
    1. The problem statement, all variables and given/known data
    Two identical particles have equal but opposite momenta, p and -p, but they are not traveling along the same line show that the total angular momentum of this system does not depend on the choice of origin.

    2. Relevant equations
    L=r x p
    Sum of torque = dL/dt

    3. The attempt at a solution
    Do not understand the problem at all.
  2. jcsd
  3. Dec 9, 2007 #2


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    Total angular momentum is r1xp+r2x(-p). If you change the origin, r1 changes to r1+d and r2 changes to r2+d. Conclusion?
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