Answered

If you bring a bar of magnet close to (or touching) the first iron nail, can be the first iron nail attract and lift a second nail? A third one?

Sagot :

Kiritobid
yes,the first iron nail can lift the second iron nail but can't lift the third one if the magnet is not that strong or is too heavy for the nails attached to the magnet causing it to fall down when you try to lift it