How to do simulate a resonant frequency?

Click For Summary
SUMMARY

This discussion focuses on simulating resonant frequency in a sinusoidal motion system. The key equation is F=kd, where F is the restoring force, d is the distance from the center, and k is a constant. The objective is to predict the object's position after half a period while incorporating an external force G and resistance. The discussion emphasizes the need to account for phase changes in input frequency and the ideal resistance to prevent indefinite amplitude growth.

PREREQUISITES
  • Understanding of sinusoidal motion and its properties
  • Familiarity with the concepts of force and resistance in physics
  • Knowledge of ordinary differential equations (ODEs)
  • Basic principles of sympathetic resonance
NEXT STEPS
  • Research the application of ordinary differential equations in simulating motion
  • Study the effects of resistance on oscillatory systems
  • Explore the principles of sympathetic resonance in physics
  • Learn about phase modulation and its impact on sinusoidal functions
USEFUL FOR

Physicists, engineers, and students interested in dynamics, oscillatory systems, and resonance phenomena will benefit from this discussion.

inhahe
Messages
8
Reaction score
0
Hello, I have a question on how to do something. I'm not sure whether calculus or trigonometry is needed. this is not a homework question.

an object will move left and right of a center point in a sinusoidal motion. the period is always the same; the amplitude should change. at any point in time F=kd, where F is the force pushing the object toward the center point, d is its distance from the center, and k is some constant.

If i have the object's position and velocity relative to center and I push or pull it with a certain force (in addition to F), let's say "G", I need to predict where it will end up after one-half a period. I also need to factor in resistance -- the object will have some amount of resistance to its motion.

The end goal is to do this many times with varying G's and calculate the amplitude at which it's moving back and forth at any particular time. so if position and/or velocity can be forgone completely so that we only arrive at intensity from G inputs that would work too.

come to think of it, if the period is always the same then the thing can't adjust to a change in phase of an input frequency (i'm simulating sympathetic resonance here), so I'm not sure how sympathetic resonance adjusts to changing phase. that has to be accounted for too.

also I need to know the ideal resistance for a given frequency so that the amplitude doesn't add up indefinitely.
 
Physics news on Phys.org
A standard ODE book would have this. You could look up an undergrad physics classical mechanics text too.
 

Similar threads

Replies
2
Views
3K
Replies
17
Views
3K
Replies
6
Views
1K
Replies
4
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 17 ·
Replies
17
Views
3K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
13K