Re: need help on this problem.

On 8 Dec 2005 06:37:00 -0800, Edward.Huerta@xxxxxxxxx wrote:
> On a floor, parallel lines separated of a length L are drawn. When
> you launch a pen of length L on this floor, the probability that it
> crosses a line is 2/Pi.

I believe that this problem is known as "Buffon's Needle", and that
you will find lots of information and analysis if you search using
that name.

For example:
http://www.mste.uiuc.edu/reese/buffon/buffon.html

/gordon

--
[ do not email me copies of your followups ]
g o r d o n + n e w s @ b a l d e r 1 3 . s e
.

Relevant Pages

  • Re: SpaceX Falcon Ready to Go - Again.
    ... and the single alternate launch azimuth to the southwest ... >> this assumes a uniform probability of hitting a populated island. ... But the risk within the first thousand or so miles of the launch ... > for rocket launching. ...
    (sci.space.policy)
  • STS-125/HST SM-4 L-1 Launch Weather Forecast (Forwarded)
    ... STS-125 Launch Weather Forecast ... probability of KSC weather prohibiting launch was decreased to 10%. ... and a sea breeze will develop during the launch window. ...
    (sci.space.news)
  • Re: SpaceX Falcon Ready to Go - Again.
    ... >>> miles to the northwest is downrange, the chances that any kind of ... >> and 60,000 islanders, on the downrange side, space launch wise. ... > this assumes a uniform probability of hitting a populated island. ... for rocket launching. ...
    (sci.space.policy)
  • Re: SpaceX Falcon Ready to Go - Again.
    ... >>>of landing SOMEWHERE in California if it goes down. ... >> There is essentially a 0/1 chance of a rocket launched out of Vandenberg ... The probability of a rocket launched from Kwajelain landing on a small ... Kwajelain launch site operators is to never launch a rocket on an azimuth ...
    (sci.space.policy)
  • STS-115 Launch Weather Forecast, issued 9 Sept. 2006
    ... STS-115 Launch Weather Forecast ... A surface high pressure area is located over the Eastern U.S., ... Probability of KSC weather prohibiting tanking: ...
    (sci.space.shuttle)