Recent content by Neofit

Sorry for that. I got stuck on something completely ridiculous. Here's my attempt and solution: Please delete this thread, or maybe leave it as a reminder of how some people (me) need to try a little bit more when lost and/or take a break for a while, but not freak out. Thanks

Homework Statement There is an equation in my class notes that I do not know how to solve. It is basically transforming equation A to equation B. It is very important to me that I know how to transform it. Homework Equations Attached as a picture. The Attempt at a Solution I do not know how...

Thank you very much! Because of your explanation I finally understand how to do the diagrams.

Homework Statement I need to be able to sketch Nyquist diagrams for transfer functions. I spent a lot of time but I cannot wrap my head around the idea of mapping the GH(jw) in the complex plane. Let's consider the following example for this question: GH(s) = \frac{4} {s(s+2)^2} 2. The attempt...

##x_1## and ##x_2## are added before multiplied to the spring constant, which is the same for both springs. Is not that what is happening? Once again, first time I saw this kind of problem was days ago in my homework. I was thinking that the resulting equation will equal the force applied...

I don't think I gained something. It's just that one variable is expressed in terms of two other variables, and I substituted... is that wrong? Anyway, are the two first equations ok? I am not sure about the damper's x variable. Should it be ##x_1 - x_2##?

Homework Statement The system is this: I want to find the equation describing it. Assuming K = K and M = M, no friction. Homework Equations Nothing to post here. The Attempt at a Solution For left M: ##f(t) = Kx_1 + b \frac {d(x_1 -x_2)}{dt} + M \frac {d^2 x_1}{dt^2}## For right M: ## b...