- #36
Wiz700
- 96
- 1
I used tiny "magnets" yet the popular term is small tiny loops :P
but I like to make it simpler to imagine it :)
but I like to make it simpler to imagine it :)
Simon Bridge said:You keep telling me I'm right and you've got what I am saying and then proceed to totally ignore what I've told you!
You will never have magnets which have a meaningful rating in Newtons or any other unit of force.
Your question has no meaning.
Magnet strength is rated in units of Gauss at the poles - or by some method related to the Gauss rating by a formula.
Please provide a link to a site which gives a rated force in Newtons for it's magnets.
If you are using the equation for the force between two electromagnets given in the reference I supplied earlier, then this value appears to be about 16 orders of magnitude too big - you need to check the units. Note also: "Gauss" is not the unit for magnetic pole strength used in that reference.Phztastic said:Unless I'm calculating it wrong?
I used simple values M1 = 100Gauss M2 = 100Gauss r =0.01M
K = 8.99x10^9
Simon Bridge said:If you are using the equation for the force between two electromagnets given in the reference I supplied earlier, then this value appears to be about 16 orders of magnitude too big - you need to check the units. Note also: "Gauss" is not the unit for magnetic pole strength used in that reference.
The correct values and units for use with the equation are given in the reference.
Here is that reference again:
http://en.wikipedia.org/wiki/Electromagnet#Force_between_electromagnets
For the general case, you will be interested in:
http://en.wikipedia.org/wiki/Force_between_magnets
If you do not read the references, I cannot help you.
Simon Bridge said:If you are using the equation for the force between two electromagnets given in the reference I supplied earlier, then this value appears to be about 16 orders of magnitude too big - you need to check the units. Note also: "Gauss" is not the unit for magnetic pole strength used in that reference.
The correct values and units for use with the equation are given in the reference.
Here is that reference again:
http://en.wikipedia.org/wiki/Electromagnet#Force_between_electromagnets
For the general case, you will be interested in:
http://en.wikipedia.org/wiki/Force_between_magnets
If you do not read the references, I cannot help you.
The first link was the one you got the original k.m1.m2/r^2 equation from. It works for me. But you are right - it links to the "electromagnets" page in wikipedia.The first link is not working.
Im guessing its a link to "electromagnets" in wikipedia? I'm reading it.
... Magnetism is complicated, yes. Sorry.I read both articles.
Ampère's model is really complicated... How can I figure out m1 and m2?
Trawl the college electromagnetism courses. This is not normally taught before second year.I can't find any references that give out examples. I can't learn this by my own it way to complicated...
Did you look it up?I'm not sure what a magnet "moment" even is... Could any of you elaborate?
You can model any magnet with a magnetic dipole .. that's why you have "north" and "south" poles.Most cases of the magnetic moment is relevant to a current carrying loop...
Nothing about magnets.
Its helpful in terms of the a electromagnet, but what about a magnet?
you (post #57 above) said:BTW, is the K = 8.99x10^9 ?
me (post #49) said:If you are using the equation for the force between two electromagnets given in the reference I supplied earlier, then this value appears to be about 16 orders of magnitude too big - you need to check the units. Note also: "Gauss" is not the unit for magnetic pole strength used in that reference.you (post #48) said:K = 8.99x10^9
...
The correct values and units for use with the equation are given in the reference.
Charges/magnets/electromagnets attract or repel each other based on their electric or magnetic fields. Like charges/magnets/electromagnets repel each other, while opposite charges/magnets/electromagnets attract each other.
The attraction or repulsion between charges/magnets/electromagnets is caused by the interaction of their electric or magnetic fields. These fields exert forces on each other, resulting in attraction or repulsion.
The strength of attraction or repulsion between charges/magnets/electromagnets decreases as the distance between them increases. This is because the electric or magnetic fields weaken with distance.
Yes, the strength of attraction or repulsion between charges/magnets/electromagnets can be changed by altering the magnitude of the charges or the strength of the magnetic field. It can also be changed by changing the distance between the objects.
The attraction or repulsion between charges/magnets/electromagnets is used in many everyday devices, such as electric motors, generators, and speakers. It is also essential in technologies like MRI machines and particle accelerators.