Undergrad Damping in a coupled pendulum system

Click For Summary
The discussion focuses on the effects of increased damping on the frequencies of coupled pendula, drawing an analogy with LC resonators. It suggests that adding a damper in parallel with the spring could influence the system's behavior, particularly affecting the "opposite" mode. Participants are encouraged to explore the implications of introducing arbitrary drag on each pendulum. Understanding these dynamics is presented as fundamental to grasping broader concepts in physics. The insights gained from this analysis are considered applicable across various physics scenarios.
VVS2000
Messages
150
Reaction score
17
TL;DR
I was going through my old lab experiments ans stumbled upon a coupled pendulum experiment I did few years ago. Now That I have learnt about damping, I was wondering how a damping which would be present in the individual pendulums affect their coupling?
The beat frequency was equal to the difference in frequencies of the two normal modes. What would be the beat frequency in the case of damping present?
Physics news on Phys.org
From analogy with LC resonators, I think the increased damping will move the two frequencies further apart.
 
I think you should first think about putting a damper on (in parallel with) the spring. You know intuitively only the "opposite" mode would be affected. Work that through in detail.
Then put an arbitrary drag on each pendulum and work it out.
If you really understand this system you are looking at half of known physics IMHO. We use it over and over.
 

Thread 'Reference frames, center of rotation, etc'

Topic about reference frames, center of rotation, postion of origin etc Comoving ref. frame is frame that is attached to moving object, does that mean, in that frame translation and rotation of object is zero, because origin and axes(x,y,z) are fixed to object? Is it same if you place origin of frame at object center of mass or at object tail? What type of comoving frame exist? What is lab frame? If we talk about center of rotation do we always need to specified from what frame we observe?
View full post »

Similar threads

Undergrad Thoughts about coupled harmonic oscillator system
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Question about Damped Oscillations
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad Different Definitions of The Quality Factor
  • · Replies 4 ·
Replies
4
Views
487
Undergrad Infinite value of amplìtude of an undamped driven oscillator at resonance
  • · Replies 18 ·
Replies
18
Views
3K
Graduate Measurement uncertainty due to thermal noise
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Question about Waves -- "frequency" versus "angular frequency"
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Standing Waves by Reflection: Losses of the Reflected Wave
  • · Replies 16 ·
Replies
16
Views
2K
Undergrad Undamped driven oscillation — Is there a phase delay?
  • · Replies 10 ·
Replies
10
Views
2K
High School Harmonic oscillator and simple pendulum time period
  • · Replies 36 ·
2
Replies
36
Views
4K
Undergrad Damped oscillator with changing mass
  • · Replies 131 ·
5
Replies
131
Views
8K