Recent content by Guidestone

Hi all. I'll get to the point. I've been interested in electricity since I was in college. Concepts such as current and resistance seemed easy to grasp for me but voltage remains a little bit obscure. It's thanks to this forum (specially forum members Jim Hardy r.i.p and SophieCentaur, sorry if...

Hello people. I recently finished studying mechatronics engineering. I decided to pursue this degree as I wanted to learn about many areas of engineering. When I chose this degree I just could not make up my mind on which side of engineering to follow so I attempted to go after everything. At...

I mean, there are two ones before the sequence of zeros. What´s going on? Does not having a substitution mean that the number of zeros is odd?

Hey guys. Good night to everybody. I'm just trying to understand why the substitution in this picture was made like this(High density bipolar scrambling) of zeros: The rules state that the sequence of 8 zeros that go after a negative pulse and an even number of ones since the last substitution...

Hi, thank you for the answers and the material you have posted. I've been really busy with exams so I don't have the chance to be around. The book's name is mechanical vibrations and it was written by Singiresu S.Rao. I will make my best to get the English version of it. I don't remember the...

Yes, I will translate it. Thank You. :)

Ok, so pulley 1 goes up and makes the left side of the rope decrease X1 units but it also makes the middle part of the rope decrease x1 units and pulley 2 makes the middle part of the rope decrease in x2 units but it still adds x2 units to the position of the mass? Why is that?

By the way. I'm sorry if this was posted in the wrong forum. I'll be posting this kind of threads in the homework section in the future. Thanks for your understanding.

Yes please Dr.D. thanks

I'm still stuck in this, I do understand that the rope's length remains constant but I'm still not getting why the distance traveled by m2 is the double do the distance traveled by the pulleys. I'm begging to think that both the rotation and translation of each pulley adds the same amount of...

Thank you for your answer Mr.Chestermiller

My guess is that the change in length is x1+x2 and to me that's the same distance that m2 has moved downwards.

Hey guys, I'm wondering why the displacement of the mass mounted in this setup is 2(x1+x2)?. I'm assuming that when the pulley rotates(when the mass is pulled downwards) the distance between the initial point and the end point of its center and the distance traveled by the mass are equal...

Good night guys. I've been studying for a test on mechanical vibrations and I came across this problem of a telescopic crane (or whatever its name is). It's necessary to obtain a equivalent constant kp and then it has to be decomposed into its vertical component and the author uses a squared...

Hi, sorry for getting in the middle of the topic. I just found it interesting. And I have a question. Why doesn't it require energy to keep the screw rotating if the screw is displacing material in a circular motion and therefore doing work?