Download Tacoma Narrows Bridge
The original Tacoma Narrows Bridge stretched 1,810 m (5,940 ft) across a narrow channel of Puget Sound near Tacoma, Washington. The bridge opened to traffic on July 1, 1940. Four months later it collapsed during a windstorm with gusts that reached 68 km/h (42 mph). The catastrophe was attributed to resonance, a physical phenomemon in which a relatively small, repeatedly applied force increases the amplitude of an oscillating system. Instead of allowing the wind to pass through, the suspended girders caught the wind. This repetitive force caused the bridge to buck and roll (motion that earned the bridge the nickname Galloping Gertie). The stronger the wind blew, the more violently the structure oscillated, until it finally broke apart and crashed into the water.
Download Tacoma Narrows Bridge
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3 Komentar:
pertama!!!bebas komentar,hi..hi..
jembatan...jd inget jembatan ancol..hi..hiii
halo..tahnks udah mamapir..tukeran link boleg ga???
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