Physics
Forced Vibration
Quick fact
The Tacoma Narrows Bridge collapse in 1940 is a famous example of forced vibration—wind-driven oscillations matched the bridge's natural frequency, leading to catastrophic resonance.
Why this is interesting
Why can a singer shatter a glass with just her voice, and what causes a suspension bridge to collapse in a gentle wind? The answer lies in a deceptively simple phenomenon: forced vibration.