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To study the (in)stability of the discrete simulation, i made a “as simple as possible” model. Indeed, the method proves to be unstable for this physical casus. The instability decreases as the duration of the time slice (dt) gets smaller, and becomes stable in the end as dt approaches zero. To comp...

And another one:
https://nitisara.ru/forum/viewtopic.ph ... ial#p13342

Hi Davey, You did quite a job on the “two body/two spring” object. I had a look at your method, the math, and the code, and have some remarks/sugestions. If the kinematics are done correctly, the system should remain within its limits, also without the correction due to air drag. Most important is a...

Henko wrote: ↑

Sat Oct 03, 2026 6:17 am

Where?
I can’t find it.

Ah, a separate post.

Where?
I can’t find it.

IMG_1456.jpeg graphics ! graphics clear .8,.8,.8 ! draw color 0,0,0 get screen size sw,sh ! xc=sw/2 ! yc=sh/2 option angle degrees draw size 2 ! R=300 ! da=15 for alfa=0 to 360-da step da R=50+.6*alfa xo=xc+8*cos(alfa) ! yo=yc-8*sin(alfa) xe=xc+R*cos(alfa) ! ye=yc-R*sin(alfa) draw_arrow(xo,yo,xe,ye...

In the Netherlands, the vast majority of housholds have installed solar panels on the roof. Due to the fact that excessive electricity production of a household will stop generating benefits coming year, the installation of home batteries is now hot in the Netherlands. The question is then what batt...

Nice graphics! It would be really interesting to have a simulation of a system with two balls and two springs, the second spring “piggybacked* to the other. If the spring constants and the ball masses could be set by sliders, interesting ball movements could be investigated. The math of the two ball...

' Kaprekar's constant 6174 ' ' start with any 4 digit number, with at least 2 digits ' different from each other, and greater than 1000. ' Make two new numbers by sorting the number digits upward and ' downward. ' Calculate the difference and repeat the previous step with ' that difference. ' After...

Ok, i followed the correct procedure now, and it works fine.
Quite a project.
Are you planning to design & code a random music generator with this toolkit?