Recent content by HWGXX7

Anyone, need some more information. Thansk anyway!

So there doens't exist clear formulas for calculating strenght based on the properties of the individual phases? Because I never heard of those tables, possible to give me a some background information about those data? ty

Anybody can help me? Sorry for bumping if this is the case. ty

Hello, soon I will be taken examinations about microstructures and phase diagram. Very interesting stuff, but I how can I determine the strenght of a phase in a microstructure? I know the basic formula's to calculate the totale strenght, but I therefore I would need also the strenght of...

I'm following a electromechanical course with some advanced courses of feedback systems. This is a exam for which I have to set up a good PID control system. Problem is I can't find the 'exact' transferfunction, which kill al the other question of course.. What you wrote down (second order...

Hello, I have to find the transfer function of a given model (matlab). My task is to determine this function, by means of a step response of the system. I have to use graphical methods tot get the parameters, the proces itself is a high order proces with non minimum phase...

If the body was first in rest, the momentum was zero. After the explosion the sum = 0. So the the 'exploding object' will first rise in the sky, because some particle must have momentum towards earth. But what if I can exert external force to counteract the internal forces, which creates...

General case, it's very logically indeed that the body will be distorted. So an explosion for example is an extreme case where the body initially fall apart and each subparticle will undergo the same internal force. But why doesn't travel all the particle the same traject? I suppose that de...

Hey, question about the work done onto a system of particles. I have to include the work of the internal force because the particles itself can undergo different displacements. I don't understand this very well..Is this only possible if the body is distorted ? ty

Anyone an idea? ty

Hello, I'am looking for de correct transformation formule:\mathcal{L}[f(t).g'(t)] (and proof). I'am not looking for method to solve it by means of integrating g'(t), offcourse this a possible way. But assume that g(t) is much work to calculate. So is there a good one to one formule...

Oké, think I got it. Thank you for the help! grtz

The mass is moving downwards to the position where its potential energy is maximum. Potential energy will rise becasue of: \frac{d\overrightarrow{E_{p}}}{d\overrightarrow{y}}=-d\overrightarrow{F} The dot product d\overrightarrow{F}.d\overrightarrow{y} is negative because force vector ans...

There is difference between: -dF.dy=dE_{p}and -d\overrightarrow{F}.d\overrightarrow{y}=dE_{p} Second thing is a dot product, force vector opposes the direction of the position vector. So I get: -d\overrightarrow{F}.d\overrightarrow{y}=-dF.dy.cos(\theta) The angle bewteen those is \pi, so...

What did you mean with that? grtz