Uploaded August 2026 | Updated September 2026, 2 weeks ago
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The natural frequency of a system is the frequency at which the system will oscillate when it is displaced from its equilibrium position. In the presence of a sinusoidal external force, a system may exhibit resonance. Resonance occurs when an external force is exerted at the natural frequency of the oscillating system. Resonance increases the amplitude of oscillating motion.
Sections:
00:00 - Sound breaks a wine glass
00:24 - Damped vs undamped oscillations
03:33 - Effect of damping on frequency
06:13 - Driven oscillations
08:07 - Resonance
11:07 - How can sound break a wine glass?
Credit:
"Breaking glass with sound" by Trevor Cox, youtube.com/watch?v=PlKYVnEo-jg
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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now. khanacademy.org/science/ap-physics-c-mechanics
The natural frequency of a system is the frequency at which the system will oscillate when it is displaced from its equilibrium position. In the presence of a sinusoidal external force, a system may exhibit resonance. Resonance occurs when an external force is exerted at the natural frequency of the oscillating system. Resonance increases the amplitude of oscillating motion.
Sections:
00:00 - Sound breaks a wine glass
00:24 - Damped vs undamped oscillations
03:33 - Effect of damping on frequency
06:13 - Driven oscillations
08:07 - Resonance
11:07 - How can sound break a wine glass?
Credit:
"Breaking glass with sound" by Trevor Cox, youtube.com/watch?v=PlKYVnEo-jg
------------------
Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help!
Donate here: khanacademy.org/donate?utm_source=youtube&utm_medium=desc
Volunteer here: khanacademy.org/contribute?utm_source=youtube&utm_medium=desc
