- #1

Artemirr

- 2

- 0

Please be in metric if helping. So Looking on wiki I have found some formula's but not sure on there application of process to be used with the information I have gathered.

I have a project in where I need to be able to calculate hopefully the charge of a magnet and its A/m and magnetism and explain its effects. I am not concerned with how complicated it gets mathematically but I need to know what is needed to calculate a single magnet and/or two magnets. Also electric field of each magnet.

So here are the tools I have and info gathered so far.

2 similar shaped magnets with a diameter(cylindrical(not hollow)) of 1.8 cm and a height of .45 cm.

I have a scale that weighs in grams.

The other magnet was not hovering but in suspension by another device holding it above the other magnet 1mm exactly away. caliper in vice... not sure if that's relevant though...

They are Permanent Magnets.

Weight of each magnet is 4 grams. When applying both attraction and repulsive forces by zeroing one of the weighted magnets. Hovering over the other exactly 1mm away the pull and attraction reached a maximum average on the attraction and repulsion of 133/135 grams. Likely enough to say both attraction and pull are proportionate to both sides so 135 grams is the force used for both forces. Magnets together after zeroing the scale.

The pull and attraction reached a maximum of 135 advg grams without touching (1 mm away.)

Is it possible to calculate the field strength with just this information? of each magnet? I also can use the scale to test the maximum weight it can hold + or - a few grams.

Much help would be appreciated.

I have no equations so far other than this that might help

F(N)=

qm1qm2/4(pie)r²

I need guidance so I can get results that can be tested against, such as maximum lift potential and then applying the theory to practicality. If I need a meter of sorts I may be able to get one for the purpose.

here is what I calculated so far if the information I am using it correctly.

using this formula:

F={{\mu q_{m1} q_{m2}}\over{4\pi r^2}}

rearranged as it so

q= \sqrt{{\F 4\pi r^2}\over{\mu }}

(0.135Kg*9.8) = 1.323 N

radius of objects/s plus distance in between = 1.45mm = 1.45^-2

q = /sqrt ( 1.323 N)(4 pi (0.0145m)²/ (4 pi ^-7)

q = 52.74 Am

A = C/s

A * m = Cm/s

Does this number make sense to calculate the electrical field strength now... lol Sigh 189 C km/h seems... kind of extreme... perhaps using gravity to calculate its gravitational force for the equation is a poor attempt. Perhaps the acceleration needed is something else then again this wold be the speed of the... I don't know magnitude does not seem help for calculating anything else towards magnetism... -.-''!

Hmm, something is wrong lol... I get

v(magnet magnitude) = Am/C =3.256e20 or 325,555,555,555,555,555,555 m/s lol... speed of light is only 299,792,458 m/s :( sigh I figure I was wrong... units are right but they lie to me lol...

## Homework Statement

I have a project in where I need to be able to calculate hopefully the charge of a magnet and its A/m and magnetism and explain its effects. I am not concerned with how complicated it gets mathematically but I need to know what is needed to calculate a single magnet and/or two magnets. Also electric field of each magnet.

So here are the tools I have and info gathered so far.

2 similar shaped magnets with a diameter(cylindrical(not hollow)) of 1.8 cm and a height of .45 cm.

I have a scale that weighs in grams.

The other magnet was not hovering but in suspension by another device holding it above the other magnet 1mm exactly away. caliper in vice... not sure if that's relevant though...

They are Permanent Magnets.

Weight of each magnet is 4 grams. When applying both attraction and repulsive forces by zeroing one of the weighted magnets. Hovering over the other exactly 1mm away the pull and attraction reached a maximum average on the attraction and repulsion of 133/135 grams. Likely enough to say both attraction and pull are proportionate to both sides so 135 grams is the force used for both forces. Magnets together after zeroing the scale.

The pull and attraction reached a maximum of 135 advg grams without touching (1 mm away.)

Is it possible to calculate the field strength with just this information? of each magnet? I also can use the scale to test the maximum weight it can hold + or - a few grams.

Much help would be appreciated.

## Homework Equations

I have no equations so far other than this that might help

F(N)=

*u*qm1qm2/4(pie)r²

## The Attempt at a Solution

I need guidance so I can get results that can be tested against, such as maximum lift potential and then applying the theory to practicality. If I need a meter of sorts I may be able to get one for the purpose.

here is what I calculated so far if the information I am using it correctly.

using this formula:

F={{\mu q_{m1} q_{m2}}\over{4\pi r^2}}

rearranged as it so

q= \sqrt{{\F 4\pi r^2}\over{\mu }}

(0.135Kg*9.8) = 1.323 N

radius of objects/s plus distance in between = 1.45mm = 1.45^-2

q = /sqrt ( 1.323 N)(4 pi (0.0145m)²/ (4 pi ^-7)

q = 52.74 Am

A = C/s

A * m = Cm/s

Does this number make sense to calculate the electrical field strength now... lol Sigh 189 C km/h seems... kind of extreme... perhaps using gravity to calculate its gravitational force for the equation is a poor attempt. Perhaps the acceleration needed is something else then again this wold be the speed of the... I don't know magnitude does not seem help for calculating anything else towards magnetism... -.-''!

Hmm, something is wrong lol... I get

v(magnet magnitude) = Am/C =3.256e20 or 325,555,555,555,555,555,555 m/s lol... speed of light is only 299,792,458 m/s :( sigh I figure I was wrong... units are right but they lie to me lol...

Last edited: