Recent content by n3pix

Hello, I'm newly discovering the world of the Energy. My question is about the equation ##U=\int \vec{F}\times d\vec{r}=-\int \vec{F}_{s}\times d\vec{r}##. Can you tell me what does this equation means? Thanks!

I mean, in this quote; In the integral (##W(A\rightarrow B)=M\int_B^A (\frac{d\vec{v}}{dt}.\vec{v})dt##) the integrand is ##(\frac{d\vec{v}}{dt}.\vec{v})## and it can not be equal to ##(\frac{d}{dt}{\vec{v}}^2)##. But the derivation says that it is equal to this. Check it again please. In my...

The integral is called the line integral of ##F## from ##A## to ##B##. The work done in the displacement by the force is defined as, ##W(A\rightarrow B)=\int_A^B \vec{F}.dr## where the limits ##A## and ##B## stand for the positions ##r_A## and ##r_B##. We now return to the free particle...

Thanks, I think I get the idea but I will try to ask my questions about this topic here.

Wow, I didn't think this way. Thank you so much :)

Hello, I'm confusing about the basic terms about Conservation of Energy, Potential Energy and Work. Consider that we have a mass ##M## above the ground (zero point) distance of ##y_{0}=h##. When we release the mass it will accelerate through it's way to ground. So the work is made by a field...

Thank you for your answer! You made me happy, I was checking here every 5 minutes to see something new :P I'm sorry, I don't understand how you made that derivation of ##\Delta \vec{r}##. Also, I like the first method as well. I think I'm a bit perfectionist person, I can't skip everything...

Any idea? :( I'm working on this questions, more specificly on the second way for 3-4 days after the school :(

I have a little question about converting Velocity formula that is derived as, ##\vec{V}=\frac{d\vec{r}}{dt}=\frac{dx}{dt}\hat{x}+\frac{dy}{dt}\hat{y}+\frac{dz}{dt}\hat{z}## in Cartesian Coordinate Systems ##(x, y, z)##. I want to convert this into Polar Coordinate System ##(r, \theta)##...

Alright, I understand the main idea. %95 or more of what you think about me is correct. Thank you for your interest and help so much! Have a good day, sir!

Well, this is exactly what I wanted to hear. Golden statue of the question. Thank you for short and very very explanatory answer. I don't have a good physics knowlesge and understanding, I trust what you said word by word. So, I should to keep up with Rocket Science. Also, what should I know...

Hello, I was interested in Rocket Science & Engineering and read books on this subject. I have general knowledge about Rocket Science & Engineering. This general knowledge doesn't make me a Rocket Scientist or Engineer but I can look at things by aspect of a Rocket Scientist a bit. In my...

Well this description is good but, I can't image what is going on, sadly. Can you describe this with some paper & pen drawings or an paint image, please? My English and Google Translator's Turkish is not enough to describe three things' relations :P Thanks for your reply, I got what you tried...

Hello, I'm reading a textbook named "Introduction to Rocket Science and Engineering" by Travis S. Taylor. I'm now in a general cosepts about orbits. I have a question, what the book says in here? I can't understand the bold formatted sentence. What the author try to mean? If you can, can you...

I'm now reading, Introduction to Rocket Science and Engineering, Taylor S. TRAVIS. And having some physics/astronomy issues, I will now ask these questions :)