Hey all, I'm new here and hoping to enjoy glorious physics with you all! I have a problem and a question; the problem is I don't know much about electromagnets and want to build something rather involved using an electromagnet. XD The question shall be explained.. General Concept: I'm going to build a semi-permanent wire swing; this swing shall be attached to a 2 inch thick steel plate by a small electromagnet; the steel plate permanently mounted to a tree. (imagine a wire with an electromagnet on one end affixed to a steel plate) I'm going to use mechanical means to toss the electromagnet at the steel plate trailing the wire; the wire and magnet need to be under one pound or I won't be able to propel it without an unrealistically large amount of force. The wire weighs nine onuses; that leaves seven onuses for the magnet. So my question is this: is it possible for a seven ounce electromagnet to hold 600 pounds; assuming there is no limit to the amount of electricity I can power the magnet with? Reason for 600 pounds... With safety in mind; If a 200 lbs man were to swing from a 90 degree angel; the most force the wire (and magnet) will be under is about three times the weight of the man; thus the 600 lbs.