Solve Pendulum Eq'n: λ≠0, μ=0 | Angular Freq ωd & Eigenfreq ω0

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SUMMARY

The discussion centers on solving the pendulum equation under two specific conditions: Case 1 with λ=μ=0 and Case 2 with λ≠0 and μ=0. The goal is to derive a relationship between the eigenfrequency ω0, the damping constant γ, and the angular frequency ωd for damped oscillations. The user initially expressed confusion regarding the separation of variables in the equation due to the term μ*cos(ω*t), but ultimately resolved the problem independently.

PREREQUISITES
  • Understanding of pendulum dynamics and equations of motion
  • Familiarity with eigenfrequencies and damping in oscillatory systems
  • Knowledge of separation of variables in differential equations
  • Basic concepts of angular frequency and inertia moment
NEXT STEPS
  • Study the derivation of eigenfrequencies in damped harmonic oscillators
  • Learn about the effects of damping on oscillatory motion
  • Explore the mathematical techniques for solving second-order differential equations
  • Investigate the physical implications of varying λ and μ in pendulum systems
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Students and researchers in physics, particularly those focusing on classical mechanics and oscillatory systems, will benefit from this discussion.

abotiz
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My assignment is in Swedish so I will try to Translate as good as I can ( if someone knows swedish you can visit the link http://physics.gu.se/~sjogren/FYP100/PM_svaengning.pdf )

Homework Statement



We have a swinging Pendulum which equation is given by :

Equation.jpg
attachment.php?attachmentid=18428&stc=1&d=1239580563.jpg


The variables κ, λ and μ are positive constants which are characteristic of the swinging system. θ is the Pendulum angular deviation from the equilibrium position. I = inertia moment

The Question :

Solve the equation in 2 cases

Case 1 : λ=μ=0

Case 2 : λ≠0, μ=0

The Purpose :

Use the Solutions to derive a realtion between the eigenfrequency ω0, damping constant \gamma and angular frequency ωd for the damping Oscillation.

2. The attempt at a solution

Many, and i do not know what to do, because the angular frequency ω = dθ/dt which make the term μ*cos(ω*t) the whole equation into a separable equation ? Iam confused

I need help with this one. A solution to this would be appreciated!

Thanks
 
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