# Cars attaching to one another using magnetic force

## Main Question or Discussion Point

hi,
i'm doing a little research and in need of help since i'm not so talented in physics.. :(
Is it possible to attach 2 cars with magnetic force so that they can be driving as one? (one car in the front and another car behind)
I think it can be done with magnetic force but how..
Also, Is it possible to control the magnetic force so that when wanted, the 2 cars can separate while driving?

I wanted to know the way of making this happen in the future without using some mechanism like using hooks.

quick help would be appreciated! Thank you!

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berkeman
Mentor
hi,
i'm doing a little research and in need of help since i'm not so talented in physics.. :(
Is it possible to attach 2 cars with magnetic force so that they can be driving as one? (one car in the front and another car behind)
I think it can be done with magnetic force but how..
Also, Is it possible to control the magnetic force so that when wanted, the 2 cars can separate while driving?

I wanted to know the way of making this happen in the future without using some mechanism like using hooks.

quick help would be appreciated! Thank you!
It's probably better to use a different mechanism. Why are you settled on using magnets?

DaveC426913
Gold Member
You can use magnets, yes.

Make them electromagnets so they can be switched on and off. Front bumper is North, rear bumper is South.

The problem you'll encounter - above and beyond the energy consumption, which will be large - is that magnetism strength drops rapidly over a very short range.

You can use magnets, yes.

Make them electromagnets so they can be switched on and off. Front bumper is North, rear bumper is South.

The problem you'll encounter - above and beyond the energy consumption, which will be large - is that magnetism strength drops rapidly over a very short range.
Could you elaborate on how electromagnets can be switched on and off?

It's probably better to use a different mechanism. Why are you settled on using magnets?
Because its kinda futuristic than mechanism like using hooks

berkeman
Mentor
Could you elaborate on how electromagnets can be switched on and off?
Just look up electromagnets on wikipedia.

But as Dave says, that would be a huge waste of energy.

berkeman
Mentor
Because its kinda futuristic than mechanism like using hooks
Should this thread be moved to the Science Fiction forum then...?

DaveC426913
Gold Member
Could you elaborate on how electromagnets can be switched on and off?
By way of the "electro" part. Provide some, and they are magnets; no electricity, no magnet.

berkeman
Mentor
Also, you could consider magnets that are released mechanically instead of using (power wasting) electromagnets...

http://www.in.all.biz/img/in/catalog/273429.jpeg
For example, What kind of magnets that can released mechanically? i need to know ASAP :)
i found superconducting magnet...not sure if this is it

berkeman
Mentor
For example, What kind of magnets that can released mechanically? i need to know ASAP :)
i found superconducting magnet...not sure if this is it
LOL, no, it's not a superconducting magnet.

LOL, no, it's not a superconducting magnet.

lolol. im being honest with you.
im very stupid when it comes to math and physics. It's not my major. I don't even know what i'm looking at or reading on google..

berkeman
Mentor
lolol. im being honest with you.
im very stupid when it comes to math and physics. It's not my major. I don't even know what i'm looking at or reading on google..
Well, I'll be honest with you. You will not improve your level of understanding if you keep asking others to spoonfeed you solutions. Please try to get in the habit of trying to answer your own questions on your own first, and then asking for help when you have done your best first.

At the PF, we do our best to help students learn how to learn, and spoonfeeding is not part of that.

Also, always remember that if you give a person a fish, your feed them for a day. If you teach them how to fish, you can sell them boats and trucks and fishing gear and bait and beer for life.

256bits
Gold Member
Also, always remember that if you give a person a fish, your feed them for a day. If you teach them how to fish, you can sell them boats and trucks and fishing gear and bait and beer for life
And if you give a fish a person, you get arrested.