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Best answer by ValeryOchkov

F.M. написал(а):

Beautiful, .... but the woman ... the one of the photo, is even more ...

Woman and Flowers!

tulpan.png

You can change L, masses, start point and get new woman, flowers etc!

108 replies

V
vlehner1-Visitor
1-Visitor
May 6, 2017

Wouldn't it be better, to study the geometrical relationships before starting calculation?

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-MFra-21-Topaz II
21-Topaz II
May 6, 2017

Hi Valery,

Can we describe the problem the following way?

The material system consists of five bodies: the masses M0, M1, M2 and the fixed disks' masses μ1 and μ2, of equal rays r. The wire is inextensible and, by chance, it does not creeping.

Determine the system motion and the tension in the wire.

Can we choose the location of the reference system's origin, at our discretion? For example so:

tre masse.jpg


or is it fixed at L/2?

Thank you

F. M.

V
vlehner1-Visitor
1-Visitor
May 6, 2017

Hi F.M.

I guess it's fixed at L/2 and y0.

After releasing the weight m0 at this position, the system finds its equilibrium.

Putting the center of the first disk to the origin of the coordinate-system would be advantageous for solving with Lagrangesche Formalism.

The equations should be more simple than.

Viel Erfolg!

Volker

V
vlehner1-Visitor
1-Visitor
May 6, 2017
...Update:
and:
Situation of the acting Forces:
V
vlehner1-Visitor
1-Visitor
May 7, 2017

In attempting to solve a physical problem by physically setting up different forces for the physics of Newton's laws for an arrangement and to calculate these in the solution block using the Odesolve function, errors occur.
If I change various signs in my equations (although this contradicts the physical correctness!), I get a result.
From a scientific point of view, the application of the solution block on this point makes no sense from my point of view.


Valery, I would appreciate it very much if you mention that in your report.

Thank you.

Volker

V
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
May 7, 2017

Мы это называем "Метод научного тыка".

V
vlehner1-Visitor
1-Visitor
May 7, 2017

if this would help me, i didn't have sleepness nights.

Now, off today.

...One day it stings, another day it brings.

in this sense, see ya next time.

Volker

V
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
May 7, 2017

There is one game - Find 10 differences

One example

10-dif.jpg

You can find in attach 2 sheets - Mathcad 15 and Prime 3.1.

Prime is OK - Mathcad 15 has an error

Find please 1 or N differences - the origin of the error!

V
vlehner1-Visitor
1-Visitor
May 7, 2017

it's better i'll go back to the abacus.

V
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
May 7, 2017
Volker Lehner написал(а):




it's better i'll go back to the abacus.

Утро вечера мудренее!

You can change the job - find please the error in my Mathcad 15 Sheet. Prime is OK!

V
ValeryOchkov24-Ruby IVAuthor
24-Ruby IV
May 8, 2017

Animation of moving the point 0 without air resistance.

This pendulum has a period 15.37... sec!

Video Link : 7852

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