cylindrical magnet

They've given you the flux density of the magnet. Go back and ask them for the force which the magnet is capable of.

Granted, they gave the flux density since the size of the magnet was known, and the field strength was given. But remember, not ALL permanent magnets of that particular size will afford the same field strength. The flux density is a function of the permeability and retentivity of the material (among other things). Read the Wikipedia article ('shudder') for starters ... it's not bad:

http://en.wikipedia.org/wiki/Magnetic_field

Perhaps I've "slipped", and forgotten a fundamental here (will research back in office on Monday), but, I don't believe the force can be calculated without knowing a few factors about the object being acted upon. Putting it simply, the magnet of which you speak, if brought into proximity with a piece of crown glass will exert or impart a force much much less than if brought close to a tool steel bar, which will likewise be less than if it is brought up to a soft iron rod such as a solenoid core.

Anyone else out there heavily into the numbers of same...(?) {Help!}

"PS"

Go to :

http://www.translatorscafe.com/cafe/tools.asp?pn=unitcnv

and scroll down to "Magnetism" converters ... just for fun.

Very interesting!!!

Doesn't the force also depends on what the magnet will be attracting to?

Pineapple

I suspect that this is exactly what the poster meant in #2, above:

"Putting it simply, the magnet of which you speak, if brought into proximity with a piece of crown glass will exert or impart a force much much less than if brought close to a tool steel bar, which will likewise be less than if it is brought up to a soft iron rod such as a solenoid core."