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Newsreel footage from the Tacoma Narrows Bridge Collpase. She was already known to move up in down in the wind, but in 1940, she began to oscillate due to resonance and would eventually collapse
spot on... ya have ...( 4 months ago by KILLALAlad)
spot on... ya have it in one!
Marching on a ...( 4 months ago by Modus74)
Marching on a bridge in complete sync does not creat resonance but it can amplify the vibe if the bridge has already started to resonate.
There are drawings and tales about a bridge that collapsed when soldiers were marching over in the 19th century. But there is absolutely no undeniable evidence of resonance at that very moment.
Array( 4 months ago by msroboto7)
1:00-1:06
People just walk be it as if nothing were happening. A BRIDGE IS COLLAPSING!
its amazing and ...( 4 months ago by shorty031836)
its amazing and also somewhat crazy that a concrete and steel bridge could do that!! i cant believe it turns and whips like that. its CRAZY!! i feel bad for the man and his dog though. =[
Yeah, that's right.( 4 months ago by kalangodeparede2)
Yeah, that's right.
renasance or ...( 3 months ago by crazyforvideosdx)
renasance or something like that is what caused this
resonance....( 3 months ago by exia550)
resonance....
resonance....( 3 months ago by exia550)
resonance....
I am an engineer, ...( 3 months ago by cnoone2)
I am an engineer, so let me explain. You are correct in that this failure is due to wind induced vibration, but what you see is neither resonance nor vortex shedding. Resonance occurs when the forcing function coincides with the natural frequency of the structure. Wind is random, not a harmonic force. Not only that, but the failure mode did not occur at natural frequency.
What happened here is called aerodynamic instability.
Good luck in your studies.
Modus74, In case ...( 3 months ago by cnoone2)
Modus74, In case you're referring to, resonance is the cause of failure. However, marching in sync alone can create resonance, not 'amplify vibes'.
At a system's natural frequency, a harmonic input (marching) of any magnitude causes the system response to spike. The less damping, the greater the response.
Modus74, In case ...( 3 months ago by cnoone2)
Modus74, In case you're referring to, resonance is the cause of failure. However, marching in sync alone can create resonance, not 'amplify vibes'.
At a system's natural frequency, a harmonic input (marching) of any magnitude causes the system response to spike. The less damping, the greater the response.
it is a conspiracy. ...( 2 months ago by checkle1)
it is a conspiracy...there was no shadow or plane parts around the bridge...therefor it was the (__insert_current_scape_goat__)!!! i heart madlibs
The man just walks ...( 2 months ago by fudgiewoogle)
The man just walks away without a care in the world lol =] RUN YOU PLEB!!
Poor doggie though =[
my physics teacher ...( 2 months ago by jamiesandrichard)
my physics teacher is making the class watch this :D
its me Jamie :D( 2 months ago by jamiesandrichard)
its me Jamie :D
My physics teacher ...( 1 month ago by RosePeacock)
My physics teacher made my class watch this too :D
mine too ! i study ...( 1 month ago by redimitrakistorm)
mine too ! i study at the university of the pelloponnese, greece. u ?
our teacher is named ingmar sandberg and he is gr8 !
i saw an interview ...( 1 month ago by LegoFan970)
i saw an interview of his... he was walking so he wouldn't fall over when the bridge was swaying
any color footage ...( 1 month ago by LegoFan970)
any color footage was originally black and white, and was colorized later. the other documentary might have been taken from the other end of the bridge (maybe)
Wikipedia says that ...( 1 month ago by Tracymmo)
Wikipedia says that the original film was in color, but newsreels like this one were done on black and white film stock. Makes sense to me. The color version looks typical for the era.
there was a dog in ...( 1 month ago by balthazar147)
there was a dog in the car who was scared and didnt want to go out . poor doggy died with the colapse
Then the collapse ...( 4 weeks ago by sp12009)
Then the collapse was still fatal. If any life was taken in this disaster, it was fatal. It doesn't matter if the one fatality was a dog, cat, hamster or pet goldfish, it's still a fatality.
In that case, If a ...( 4 weeks ago by macperson9)
In that case, If a Jet plane crashes on landing and knocks out an ant hill, and all the Passengers get out alive, they would have to report the Ants' death in the fatality section on the NTSB report- but they don't!
People just walk be it as if nothing were happening. A BRIDGE IS COLLAPSING!
Poor doggie though =[