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Homework Help: Problem regarding relativistic momentum/force/velocity

  1. Oct 13, 2008 #1
    1. The problem statement, all variables and given/known data

    Consider a particle of rest mass m0 subjected to a constant force F. The particle starts at rest; then at time t>0, the constant force F is applied. Calculate the particle's velocity v as a function of time t for times t>0. HINT: first calculate the particle's momentum as a function of time (easy!), then figure out its velocity v(t).

    2. Relevant equations

    F=dp/dt
    p=Y*m0*v


    3. The attempt at a solution

    I used F=d(Y*m0*v)/dt and tried to solve it for v, but ended up doing a lot of algebra (which wasn't supposed to happen, apparently) and my equations lacked a variable, t.

    Help?
     
  2. jcsd
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