Re: Puzzle with five coins

Ashok wrote :
In article <mn.558e7d592848b356.22155@xxxxxxxxxxxx>, nospam@xxxxxxxxxxxx says... 


For the 7 cigarettes problem the picture is here :
http://cjoint.com/?iAadlGRabe

Valid if Length > 6.0622 Diameter

Regards.

--
philippe
mail : chephip at free dot fr
site : http://chephip.free.fr/


Thanks, Philippe. How does the number 6.0622 come about?


I copy an article from Bob Pease (in Electronic Design Apr 97) :

The angle alpha = OMx  is arc tan (2/sqrt(3)) = 49.1066°
with O = center of vertical cigarette, M = nearest midpoint of one
horizontal cigarette, with axis = Mx.

Then solve for L with the law of sines
L/sin 60° =3D*sqrt(3) / sin(120° - 2 alpha)
[...] then end with L/D = (7/2) * sqrt(3)

I admit that I didn't studied this proof thoroughly !

Ashok

PS: Any chance of an English version of your web site? :) 

That would be fine ...
As I'm changing the architecture of my site
(because two much files in the same directory)
I'll think for a general architecture allowing a full bilingual site
Then just wait until I translate everything...
(up to now, there are only just a few bilingual or english pages)

Regards.

--
philippe
mail : chephip at free dot fr
site : http://chephip.free.fr/

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