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Resonance

Resonance. Bartons pendulums. Observe the Barton’s pendulums Write down two observations. Resonance occurs when the frequency of the driving force matches the natural frequency of the oscillating body. When this occurs a large amplitude vibration is observed. Bridge resonance.

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Resonance

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  1. Resonance

  2. Bartons pendulums • Observe the Barton’s pendulums • Write down two observations.

  3. Resonance occurs when the frequency of the driving force matches the natural frequency of the oscillating body. • When this occurs a large amplitude vibration is observed.

  4. Bridge resonance • Tacoma Narrows bridge disaster

  5. The “Millenium Bridge”, a foot bridge in London oscillated alarmingly when first opened. • This is illustrated in the video clip • video • The bridge had to be closed and modified to eliminate these oscillations

  6. Resonance of a helicopter • Chinook ground test

  7. Rice on a vibrating plate • Note the plate has many resonant frequencies, you will notice the amplitude increase at each of these different modes of vibration.

  8. Can you break a glass by singing? Breaking glass?

  9. Microwave cooking 2.4Ghz

  10. MRI Scans

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