Search found 66 matches

by Stargate38
Fri Nov 15, 2013 4:05 pm
Forum: Gravity Simulator
Topic: Calling all Suggestions
Replies: 124
Views: 62563

Re: Calling all Suggestions

I wonder what orbits would look like with an r^(1/r) gravity law. At large distances, this would approximate r^0 (you know what that looks like), but at small distances, such as r<50, it would act different. With 0.5^r, you probably couldn't make a stable, non-circular orbit, like r^-3.
by Stargate38
Fri Nov 15, 2013 12:03 pm
Forum: Gravity Simulator
Topic: Calling all Suggestions
Replies: 124
Views: 62563

Customizeable gravitational equation and gravity well displa

You should have a button that opens a popup box where the gravitational equation can be changed. Like this :idea: : Original equation: F(M,m,r)=G*M*m(r^n) where n is the gravity exponent (This isn't complex enough for certain conditions, such as General Relativity, where the equation is more like G*...
by Stargate38
Thu Oct 24, 2013 2:37 pm
Forum: Gravity Simulator
Topic: Equations for Orbital Period and Velocity
Replies: 5
Views: 6862

Re: Equations for Orbital Period and Velocity

Oops. I forgot to put a ^-1 on the M. Here's a fixed equation: P=(1/G^n)*2pi*r^((1-e)/2), where n is the correct exponent for this equation to work (still trying to find the right n value, probably 0<n<2) For e=-3, orbital velocity is basically reduced to 1/r. Since doubling the distance divides the...
by Stargate38
Mon Oct 14, 2013 2:47 pm
Forum: Gravity Simulator
Topic: Equations for Orbital Period and Velocity
Replies: 5
Views: 6862

Re: Equations for Orbital Period and Velocity

Here's an example using these equations: Gravity Fun at TestTubeGames.com: [ForceG: -1,Qual: 1,Zoom: 0.94,xSet: 0,ySet: 0], [x0: 88,y0: 0,vx: 0,vy: -2.6457513,t0: 0,who: 2,m: 1410], [x0: -88,y0: 0,vx: 0,vy: 2.6457513,t0: 0,who: 2,m: 1410], [x0: 0,y0: -352,vx: -4.236067977,vy: 0,t0: 0,who: 3,m: 0], [...
by Stargate38
Wed Oct 09, 2013 8:13 pm
Forum: Gravity Simulator
Topic: Equations for Orbital Period and Velocity
Replies: 5
Views: 6862

Equations for Orbital Period and Velocity

Here's some equations:

1. Orbital Period:

P=G*r^((1-e)/2) where G=force of gravity, r=average orbit radius, and e=gravity exponent

2. Velocity:

V=(G^(1/2))*r^((e+1)/2) (seems to fit for e=-2 and e=1)

I hope I got this right. I used trial and error to figure these equations out.
by Stargate38
Thu Aug 15, 2013 3:17 pm
Forum: General Chat
Topic: Welcome!
Replies: 37
Views: 24361

Re: Welcome!

Nice Forum! :D I came here after finding your Gravity Simulator, since I was searching for a simulator that has a variable gravity exponent. I was amazed at how r^1 worked. All objects have the same orbital period, but if there are more than 2 objects, one will be sent spiraling outwards, then after...