Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Square Loop of Copper Wire Falls out of

  1. Nov 24, 2008 #1
    1. The problem statement, all variables and given/known data
    I am stuck on a HW problem. A square loop of copper wire falls out of a side 'a' and radius 'r' falls outside of a magnetic field 'B'. How does one find the terminal velocity?
    B = 1.2T
    a = 5cm
    r = 1mm

    Please help me set up this problem so I can solve it and figure out what is going on!

    Thanks,
    Ryan---


    2. Relevant equations
    Perhaps...
    vf = vi + at


    3. The attempt at a solution
     
  2. jcsd
  3. Nov 25, 2008 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi Ryan! Welcome to PF! :smile:

    Forget about acceleration!

    Terminal velocity means that the acceleration is zero!

    So just balance the magnetic force against gravity. :wink:
     
  4. Nov 25, 2008 #3
    Ah! Failed to see the obvious.
    Thanks!!

    Regards,
    Ryan---
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook