matthewdaye

Just wanted to thank everyone for their help, I passed in the project today. Hope I get a good mark. I found some formulas for electromagnets that seemed to work pretty good and the force equations you all posted worked good too. I will post the website for the formulas. This is not the same one I used, I can not seem to find it but here is one that is similar http://physics.villanova.edu/faculty/shaw/lab/magnet.htm <---in case anyone needs it.....

I knew I was pushing my luck, should have been satisfied with the info you guys gave me. It was good stuff after all. But what I really wanted was help with the force equations, I will try first but i'm only in grade 11 and they are a little hard for me. I am trying right now to find out how strong electromagnets can be. I found out about the coils and volts and stuff you were talking about. Seems like thats what I will go with. But please don't think of me as ignorant, I really am trying to figure it out on my own first. Thats the only way someone can learn, right? But if anyone does have any helpful information or knows someone that does please dont be hesitant to e-mail me at dayej2@student.ednet.ns.ca or phantom_ellipsis@hotmail.com. If if helps, I was thinking of a magnet weight that would not hinder the car greatly. Possibly 250-300 lbs? Maybe higher. I was also thinking about putting them on the sides for side on crashes. Also, I have a question, do you think the magnet would shatter after being struck. I have read that neodymiun magnets can be quite brittle, not sure about electro. I also just want to remind that I'm not looking for something that is going to bring the cars to a stop, just slow them down maybe by half the speed. Thanks Everyone

P.s. man this site is informational.... have to come here more often

Ok, the things said will be good for the cons part of my project but I wonder If anyone can help with the equation to show the math behind it. I pretty much knew at the first that it would not be feasable in real life.

I need some examples, but I really thank you guys for your help. I was thinking along the lines of 50, 80 and 100 kph whatever that is in feet per second. I was also thinking about how if i used an electromagnet it would eliminate the possibility of cars accidentally sticking together and it would turn on like airbags when a mechanism was touched or compressed.

I forgot to ask something. I know I sound stupid but thats why im asking. What unit is the force in, in the equation f=ma...? also would the acceleration be mph or kph? also the mass is it in tonnes, pounds?

You guys really have in depth answers. I did mean two negative magnets by the way, so the cars would repel each other. I wonder if anyone has any equations or info about how much force two magnets have when opposing each other. If this idea goes no where I was going to change my idea for my project to something like how we could use animal traits or abilities for our benefit. Maybe something like Biosteel where they put the spider genes in the goat milk or whatever. Something along those lines. Any ideas? The car crash idea would be my main pick tho

I was wondering if anyone had any information about the forces in a car crash at different speeds. I am also looking to find info about how much force opposing magnets can have on each other. I am trying to figure out how big of a magnet you would need to have in two cars if they crashed to signifigantly increase the chance of survival... I know it sounds crazy, but we get a lot of points for creativity in this project