Recent content by FeX32

A friend of mine always argued that "we" are evidence of significant decrease in entropy. The fact that humans and animals, plants, etc. can arise from the universe seemingly spontaneously whilst the universe around us is null can be interpreted this way. (we are composed of a very organized...

Energy "is", and will always be. It is that which drives this universe. Of course we do not know where it originated from, as we have only been around for a little while, if we knew the answer to that question we would inherently know the answer to the other 1000 questions that boggles us today.

Its strength can ba accurately calculated by a mechanical engineer. Since it is a simple connected pipe analytical formulations are possible. Computer simulations are also a possible solution.

No big deal. He got lucky. It's just funny as his approach was "in your face" haha. Good for him.

Oh jeeze. I came to check this just now and I realized I forgot one line. :) Here it is: \frac{d\hat{A}}{dt}=\frac{dA_x}{dt}\hat{i}+\frac{d A_y}{dt}\hat{j}+\frac{dA_z}{dt}\hat{z}+\left( A_x \frac{d\hat{i}}{dt}+A_y\frac{d\hat{j}}{dt}+A_z \frac{d \hat{z}}{dt}\right) Change this line in...

Well that sentence is flawed actually. Say you have a vector A=A_x\hat{i}+A_y\hat{j}+A_z\hat{z} in a Cartesian frame. Knowledge of its velocity in this frame is obtained through its time derivative. This yields...

I think you mean the 'cross product', not times.

By the way, that attached .png is garbage, no offence.

A linear spring pulled from equilibrium exerts a force k*x. A linear spring compressed from equilibrium exerts a force k*x. Thus, the force is k*x+k*x. I'm not sure where the issue lays

Another term commonly used is "thinking outside the box"

Your image doesn't work. I also agree with the above comments. And I agree with dadface in terms of creativity. I work in research, and the 'spark' of creativity is very essential to making any breakthroughs. And yes, many times they lead to dead ends, but not always.. Cheers,

And don't forget about the steel within the concrete..

Are you assuming a huge solid piece of steel? If so this would cause huge error. One huge block of steel, wow. There is likely to be a couple c-channels or I beams that make up the structure. Their elasticity is going to be made up of their components. Also, concrete doesn't abide by the...

What to you refer to by "phase space"? And yes linear controllers usually can be used successfully within certain limits on nonlinear systems. Most real systems are nonlinear, some much more so than others.

Will do!