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

Electromagnet question

  1. Sep 13, 2004 #1
    I was wondering if it is possible to pull a hail-size dent out of a car with an electromagnet. I have seen an electromagnet that is 1-3/4" diameter and can hold 700 lbs. Will this do anything or what?
  2. jcsd
  3. Sep 13, 2004 #2


    User Avatar
    Science Advisor
    Homework Helper

    You could probably do it if you could keep the magnet flush with the indentation. Otherwise, the holding power of just the edge of the magnet may not be adequate.
  4. Sep 14, 2004 #3
    did you try a plunger
  5. Sep 15, 2004 #4
    Some electromagnets can lift a car. We see it on TV and movies quite often. It is not the size that matters, but the current in the coil (although the bigger the electromagnet, the more wire you can loop around it, adding to current density)
  6. Sep 17, 2004 #5


    User Avatar

    Try telling that to my girlfriend! :rofl: :rofl: :rofl:
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Electromagnet question