Geometric problem that's been driving me crazy...

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Dory
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Geometric problem that's been driving me crazy...

Post by Dory » Sat Feb 26, 2011 11:27 am

http://www.physicsforums.com/showthread.php?t=475308

I'd like to know if any of you can understand how to solve it. So far, we're a bunch of people struggling with it online, and even my teacher and classmates had no clue. I even posted it on my facebook. The replies at physicsforums didn't help me find the radius yet (I'm femme_physics).... does anyone know how to solve for r?
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Re: Geometric problem that's been driving me crazy...

Post by Xamonas Chegwé » Sat Feb 26, 2011 11:31 am

Can't view the diagram without signing up there - can you attach it, please?
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Re: Geometric problem that's been driving me crazy...

Post by PsychoSerenity » Sat Feb 26, 2011 11:33 am

Xamonas Chegwé wrote:Can't view the diagram without signing up there - can you attach it, please?
+1

I'm interested now. Getting a pencil and paper to hand...
[Disclaimer - if this is comes across like I think I know what I'm talking about, I want to make it clear that I don't. I'm just trying to get my thoughts down]
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Re: Geometric problem that's been driving me crazy...

Post by Gawdzilla Sama » Sat Feb 26, 2011 11:40 am

This is a maffs thing, ain't it?
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Re: Geometric problem that's been driving me crazy...

Post by Dory » Sat Feb 26, 2011 11:51 am

Yes, and happily!
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Re: Geometric problem that's been driving me crazy...

Post by Gawdzilla Sama » Sat Feb 26, 2011 11:58 am

Squaring the circle problem there? :hehe:
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Re: Geometric problem that's been driving me crazy...

Post by Dory » Sat Feb 26, 2011 12:09 pm

Do you wanna be more specific?
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Re: Geometric problem that's been driving me crazy...

Post by Gawdzilla Sama » Sat Feb 26, 2011 12:16 pm

Dory wrote:Do you wanna be more specific?
Just looking at the drawing and not the problem it looks like you are trying to develop a rule that allows you to determine the arc between those two points. If I had to deal with that I'd be looking at the triangles formed rather than the arc itself. And that requires some form of squaring the circle.
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Re: Geometric problem that's been driving me crazy...

Post by Dory » Sat Feb 26, 2011 12:23 pm

Well that doesn't sound funny at all! :react:


(but I'll look into it now...)
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Re: Geometric problem that's been driving me crazy...

Post by Dory » Sat Feb 26, 2011 12:25 pm

Well, saying "it seems like squaring the circle" is like looking at the statics problem and saying "that looks like it needs equilibrium equations :P
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Re: Geometric problem that's been driving me crazy...

Post by Gawdzilla Sama » Sat Feb 26, 2011 12:26 pm

Dory wrote:Well that doesn't sound funny at all! :react:


(but I'll look into it now...)
You have two sides and one angle, the rest is mechanics. (However, AFAIK the squaring the circle problem has never been solved. You have to go for an approximation.)
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Re: Geometric problem that's been driving me crazy...

Post by Gawdzilla Sama » Sat Feb 26, 2011 12:27 pm

Dory wrote:Well, saying "it seems like squaring the circle" is like looking at the statics problem and saying "that looks like it needs equilibrium equations :P
You're looking for a semicircular hypotenuse. Have fun.
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Re: Geometric problem that's been driving me crazy...

Post by Dory » Sat Feb 26, 2011 12:29 pm

I know what I have, and I know what is the rest... I don't know how to solve it..believe me tons of people have tried, it's easy to just throw things in the air. I even have my own scanned diagram of the attempt I've made
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Re: Geometric problem that's been driving me crazy...

Post by Dory » Sat Feb 26, 2011 12:38 pm

Gawdzilla wrote:
Dory wrote:Well, saying "it seems like squaring the circle" is like looking at the statics problem and saying "that looks like it needs equilibrium equations :P
You're looking for a semicircular hypotenuse. Have fun.
I just saw this comment.

Are you saying the hypotenuse is 6, the opposite is 2.... and now I solve with pythagorean to find the adjacent and divide it by 2 for the radius?
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Re: Geometric problem that's been driving me crazy...

Post by Tigger » Sat Feb 26, 2011 12:42 pm

This help? http://www.sosmath.com/CBB/viewtopic.ph ... 26c2487a88
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