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...
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...