Superposition of simple harmonic oscillations

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SUMMARY

The discussion centers on the superposition principle in simple harmonic oscillations, specifically addressing the mathematical representation of combined oscillations. The user presents two oscillations, x1(t)=Asin(w1t +fi1) and x2(t)=Bsin(w2t +fi2), and questions the validity of their summation to yield a resultant motion, x=x1+x2. It is established that the superposition principle applies strictly to linear systems, confirming that the forces acting on the oscillations can indeed be superposed, leading to a valid resultant motion.

PREREQUISITES
  • Understanding of simple harmonic motion (SHM)
  • Familiarity with the superposition principle in physics
  • Knowledge of linear systems and their properties
  • Basic proficiency in trigonometric functions and their applications
NEXT STEPS
  • Study the mathematical derivation of the superposition principle in linear systems
  • Explore the characteristics of simple harmonic motion in detail
  • Investigate the implications of non-linear systems on oscillation behavior
  • Learn about the Fourier series and its application in analyzing complex waveforms
USEFUL FOR

Students of physics, educators teaching harmonic motion, and anyone interested in the principles of wave mechanics and oscillatory systems.

confucius
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I know how to add harmonic oscillations on the same axis but i was wondering why can i do it? If i have x1(t)=Asin(w1t +fi1) and x2(t)=Bsin(w2t +fi2), why can i say that the resultant motion is x=x1+x2. Once again I am not interested in the solution because i know how to derive it but how to derive superposition of given oscillations from the fact that forces can be superposed. It is just my hunch that it has to be that. Please correct me if I am wrong. Thanks for your answers and i apologise for my bad english.
 
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I didn't think you could always do it...you can only apply superposition to linear systems.
 

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