Levitating a rod - magnetic field/forces

  • Thread starter Thread starter aliaze1
  • Start date Start date
  • Tags Tags
    Magnetic Rod
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
3 replies · 29K views
aliaze1
Messages
173
Reaction score
1

Homework Statement



What magnetic field strength will levitate the 2.0 g wire in the figure?

knight_Figure_32_36.jpg



Homework Equations



F = ILB


The Attempt at a Solution



Solving for B, the formula becomes:

B = F/(IL)

F = 2*9.8 = 19.6
IL = (1.5)*(0.10) = 0.15
B= 19.6/0.015 = 130.666666666...

which comes out as incorrect

what am i doing wrong?

thanks!
 
Physics news on Phys.org
...anybody know?

lol i have to submit this in a few hours! :(
 
Last edited:
i was thinking of doing that...but i wasnt sure..but yea that is correct

THANKS!