Mass center n points

#1 Posted: 2024/5/11 11:17:48

Valery Ochkov

64 likes in 670 posts.

Group: User

Help me please - see attach
Gravity-Center-n-points.sm (331.61 KiB) downloaded 814 time(s).

#2 Posted: 2024/5/11 15:04:22

Valery Ochkov

64 likes in 670 posts.

Group: User

Solutions for same mass of points. OK?
Gravity-Center.sm (14 KiB) downloaded 878 time(s).
One test

#3 Posted: 2024/5/11 21:10:39

StvMath

43 likes and 1 dislikes in 68 posts.

Group: User

For comparison, the true value for your semi-annulus is given by 4*Reff/(3pi),
where Reff = ( (R-r)^2 + 3R*r )/(R+r).

With R=1 and r = 0.9 this is 0.60534722.

1 users liked this post

Valery Ochkov 2024/5/13 01:50:00

#4 Posted: 2024/5/12 08:17:01

Alvaro

1,078 likes in 1,749 posts.

Group: User

Hi. Using Martin's Momentums functions for polygons.

mass-center.sm (38.17 KiB) downloaded 982 time(s).

or (adenda)

mass-center more.sm (21.61 KiB) downloaded 888 time(s).

Best regards.
Alvaro.

2 users liked this post

sergio 2024/5/12 23:55:00, Valery Ochkov 2024/5/13 01:50:00

#5 Posted: 2024/5/13 01:52:16

Valery Ochkov

64 likes in 670 posts.

Group: User

Thanks to all!
See please pictures in my old article
Physics and computer science: the center of gravity of a black box
http://twt.mpei.ac.ru/ochkov/Center-Gravity.pdf

#6 Posted: 2024/5/13 10:39:58

Alvaro

1,078 likes in 1,749 posts.

Group: User

Wrote
Thanks to all!
See please pictures in my old article
Physics and computer science: the center of gravity of a black box
http://twt.mpei.ac.ru/ochkov/Center-Gravity.pdf

Oh, I see. The intention is to use statistical functions. This vectorized version can replicate more or less the results, but SMath is very slow for large vectors.

mass-center-statics.sm (52.11 KiB) downloaded 844 time(s).

mass-center-statics.pdf (307.24 KiB) downloaded 434 time(s).

Best regards.
Alvaro.

1 users liked this post

Valery Ochkov 2024/5/13 14:32:00

#7 Posted: 2024/5/13 14:33:27

Valery Ochkov

64 likes in 670 posts.

Group: User

Thank Alvaro.
But check please the Spain translation of my book.
I have sent you chapters!

1 users liked this post

Alvaro 2024/5/15 01:33:00

#8 Posted: 2024/5/15 01:33:11

Alvaro

1,078 likes in 1,749 posts.

Group: User

Hi Valery. Next week I can start with that.

Best regards.
Alvaro.

#9 Posted: 2024/5/27 17:51:43

Valery Ochkov

64 likes in 670 posts.

Group: User

Wrote
Hi Valery. Next week I can start with that.

Best regards.
Alvaro.

Hi Alvaro
Espero su revicion

SMath Forum

Mass center n points - How solve it in SMath - Messages