1. ## "train" formula

If I want to use a formula for the fastest train that possible to build what should I put in the formula?

wheaties

4. ## Re: "train" formula

The train need milk from Canada.
So, it can pass the speed of light.
Thanks.
But, now - I ask it because in the news they telling about building faster train.
So, If you can look at the news and answer me (with a lot of milk variables for the formula).
What I should consider to use by the formula and what it contain?
What variable I need to examine to build such a train...

5. ## Re: "train" formula

You put in a $1$. You want a forumla $1$ train.

6. ## Re: "train" formula

Originally Posted by policer
The train need milk from Canada.
So, it can pass the speed of light.
Thanks.
But, now - I ask it because in the news they telling about building faster train.
So, If you can look at the news and answer me (with a lot of milk variables for the formula).
What I should consider to use by the formula and what it contain?
What variable I need to examine to build such a train...
The reason you are getting answers like these is you need to tell us what the formula is you are talking about.

-Dan

7. ## Re: "train" formula

I know that Newton law state:
F = ma (the second law)
The friction is force that the train have:
F-second = (mu) * N ; N = 9.8m;
N = normal;
F = force;
m = mass;
mu = Greek letter.
How that formulas can be used to build a train (at all) and in the (specific) case of building faster train?

8. ## Re: "train" formula

What about air resistance? What about propulsion? What about pollution or lack of it? What about keeping the train on the tracks in corners? What about comfort for the passengers and their safety? What about cost? What about reliability? You aren't going to find some simple equation like $\vec F = \mu \vec F_n$ that describes how to make a fast train. Your question is so simplistic that it is just silly, which is why you have gotten silly answers.

9. ## Re: "train" formula

Originally Posted by Walagaster
What about air resistance? What about propulsion? What about pollution or lack of it? What about keeping the train on the tracks in corners? What about comfort for the passengers and their safety? What about cost? What about reliability? You aren't going to find some simple equation like $\vec F = \mu \vec F_n$ that describes how to make a fast train. Your question is so simplistic that it is just silly, which is why you have gotten silly answers.
So, the things you describe are not measurable?... Still, I don't understand why if the question is so simplistic...
Another question: Can the computer calculate the things you mentioned ?...

10. ## Re: "train" formula

Originally Posted by policer
If I want to use a formula for the fastest train that possible to build what should I put in the formula?
Formula should contain "choo choo"; you may shorten that to (choo)^2 ; you're welcome,

11. ## Re: "train" formula

Originally Posted by policer
So, the things you describe are not measurable?... Still, I don't understand why if the question is so simplistic...
Another question: Can the computer calculate the things you mentioned ?...
What level of school are you in, or how old are you?