quote:
Originally posted by traxor
does that mean, if you wanted to break a bridge, you get a load of your mates, steel capped boots, and get them to march across the bridge in unison.
yes indeed
* Tacoma Narrows Bridge Collapse (November 7, 1940):
http://en.wikipedia.org/wiki/Tacoma_Narrows_Bridge
(that of those soldiers is also mentioned there in a quick sentence)
http://www.eng.uab.edu/cee/reu_nsf99/tacoma.htm
http://www.madsci.org/posts/archives/may98/892678504.Eg.r.html
http://www.civeng.carleton.ca/Exhibits/Tacoma_Nar...DSmith/photos.html
http://www.vibrationdata.com/Tacoma.htm (<=nice still photo's of the bridge's resonance in action)
http://abel.math.harvard.edu/archive/21b_fall_03/tacoma/ (<= contains the video's.)
http://homepages.tscnet.com/rickc/tnb/ (<= collection of info, links and video's about the collapse)
* "Small" case study (and live example) of a physics teacher and his class doing the same with a small suspension bridge:
http://home.messiah.edu/~barrett/mpg/2harend.html
remember that there is nothing fake about these video's! This is pure science even how wierd it may seem...
PS: not many know this but the Millenium Bridge in London was also closed for a time because it began to sway alarmingly due to resonance.
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