Resonance-The frequency of an applied force

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SUMMARY

The discussion centers on the concept of resonance, defined as the phenomenon where a body vibrates with large amplitude when subjected to a periodic force at or near its natural frequency. Participants clarify that while a force itself does not possess frequency, the object it acts upon does have a natural frequency that dictates its oscillatory behavior. The example of a mass-spring system illustrates how perturbation leads to oscillation at this natural frequency after transient effects dissipate.

PREREQUISITES
  • Understanding of oscillatory motion and natural frequency
  • Familiarity with mass-spring systems in physics
  • Basic knowledge of periodic forces
  • Concept of transient effects in dynamic systems
NEXT STEPS
  • Study the principles of harmonic motion and its equations
  • Explore the concept of damping in oscillatory systems
  • Learn about resonance in various physical systems, including bridges and musical instruments
  • Investigate the mathematical modeling of oscillations using differential equations
USEFUL FOR

Students of physics, educators explaining resonance, and engineers working with oscillatory systems will benefit from this discussion.

Woolyabyss
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This isn't so much homework as it is me having trouble understanding a concept.
I'm having trouble understanding resonance the definition in my book is

"If the frequency of a periodic force applied to a body is the same as or very near to its natural frequency that body will vibrate with very large amplitude. This phenomenon is called resonance."

I don't understand how a force can have a frequency when its not material.Would it not need to vibrate to have a frequency?
Any help would be appreciated
 
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When an object is set into any oscillatory motion it has a frequency, let's say for simplicity, that it 'prefers' to oscillate at. This is its natural frequency. It doesn't have to be in motion to have a natural frequency, but once it is set into non-forced oscillatory motion it will oscillate at its "natural frequency".

Does this clear things up?

Think of a mass-spring system horizontally, if you perturb the system and set it in motion, it will oscillate at its natural frequency after any transients have left the system.
 
electricspit said:
When an object is set into any oscillatory motion it has a frequency, let's say for simplicity, that it 'prefers' to oscillate at. This is its natural frequency. It doesn't have to be in motion to have a natural frequency, but once it is set into non-forced oscillatory motion it will oscillate at its "natural frequency".

Does this clear things up?

Think of a mass-spring system horizontally, if you perturb the system and set it in motion, it will oscillate at its natural frequency after any transients have left the system.

Ya thanks,
I read the definition a bit more closely and realized they weren't saying that the actual force itself had frequency
 

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