Steel Rod Challenge - Which One is the Magnet?

Except for "...they even smell the same.", this sound pretty familiar too:

http://cr4.globalspec.com/blogentry/10956/Magnetized-Rods-CR4-Challenge-12-15-09

Is that it?

Good job.

Déjà vu, all over again.

But there you had to be naked too . At least here you needn't.

Also the tables here are supposed to have some nails somewhere . These are ferromagnetic isn't it?

Instead of using tip of finger to balance rods, pluck a hair from your head and use hair to suspend each rod from middle to determine which rod exhibits compass needle action. If your are bald, substitute a pubic hair. If you are pre-puberty, pluck out several nose hairs and braid them together to create a strand long enough to perform test.

There is no magnetic force in the center of the magnet. So moving one end of rod across the length of the other rod, You can know which is the magnet. If the stationary rod is magnet there will be no attraction at the center. If you are holding the magnet the attraction will be through out.

M.Premil Kumar

Vizag

19/2/2010

When I hold in the hand , the non-,agnetic roller will go towards the magnetic one. (i.e) Magnetic Rod will be static in its place and the other will run towrds it. Hope it is okay

No, it is not O.K. In fact it is a classic "schoolboy howler".

Reason: "Every action has an equal and opposite reaction" (Newton)

Sorry I am so late on this one. Just visited again and saw:

"Every action has an equal and opposite reaction" (Newton)"

Not exactly the quote... more like

"Actioni contrariam semper et æqualem esse reactionem: sive corporum duorum actiones in se mutuo semper esse æquales et in partes contrarias dirigi."

"To every action there is always opposed an equal reaction: or the mutual actions of two bodies upon each other are always equal, and directed to contrary parts"

While not a quote, an often used definition is 'If body A exerts a force on body B, then body B will exert an equal and opposite force back on A for the same period of time'.

If "not a magnet" means non-magnetic it can't be done, as the magnetized rod will not attract the non-magnetic one. If it means "not significantly magentized", see post #1.