Dynamic Analysis - What will be the amplitude

Thread starter Half-Pint
Start date Apr 21, 2010
Tags

Amplitude Analysis Dynamic Dynamic analysis

AI Thread Summary

A disturbing force of 9N is described as acting harmonically, interpreted as 9*sin(ωt), where ω represents a specified frequency. The discussion highlights the need to analyze the amplitude of oscillations under harmonic excitation. A reference solution for undamped oscillations is provided to clarify the differences in amplitude. The conversation emphasizes the importance of understanding how the amplitude varies with different frequencies. Accurate analysis of dynamic systems requires careful consideration of these factors.

Apr 21, 2010

Half-Pint

*Edit*

Last edited: Apr 22, 2010

Physics news on Phys.org

Apr 21, 2010

radou

Homework Helper

Half-Pint said:

A disturbing force of 9N acts harmonically

I assume this means that the force is given with 9*sin(ωt), where ω is one of the given frequencies?

Apr 21, 2010

Half-Pint

*Edit*

Last edited: Apr 22, 2010

Apr 21, 2010

Half-Pint

*Edit*

Last edited: Apr 22, 2010

Apr 22, 2010

radou

Homework Helper

Here, this should help, it's a solution for undamped oscillations with an harmonic excitation:

http://www.fs.cvut.cz/en/U2052/node116.html

The amplitude is different, as you can see.

Thread 'Help with Time-Independent Perturbation Theory "Good" States Proof'

(Disclaimer: this is not a HW question. I am self-studying, and this felt like the type of question I've seen in this forum. If there is somewhere better for me to share this doubt, please let me know and I'll transfer it right away.) I am currently reviewing Chapter 7 of Introduction to QM by Griffiths. I have been stuck for an hour or so trying to understand the last paragraph of this proof (pls check the attached file). It claims that we can express Ψ_{γ}(0) as a linear combination of...

View full post »