  # Android Question Help: Ans = Infinity

Discussion in 'Android Questions' started by wonder, May 15, 2015.

1. So, I'm working on a little science project:
Code:
`Dim G          = 6.67 * Power(10, -11) as FloatDim Earth_Mass = 5.97 * Power(10,  24) as Float 'in kilogramsDim Sun_Mass   = 1.99 * Power(10,  30) as Float 'in kilogramsDim Distance   = 1.5  * power(10,  11) as Float 'in meters` Code:
`Dim Gravitational_Force = (G * Sun_Mass * Earth_Mass) / Power(Distance, 2) as FloatLog(Gravitational_Force)`
Output: Infinity

I'm getting "Infinity" instead of the actual value.
How can I handle such big numbers? Any suggestions?
I'm not a math wizzard...

2. If you change the order to:
Code:
`Log((G*Sun_Mass/Power(Distance,2))*Earth_Mass)`
it outputs 3.521849211074262E22
Not sure if that is the correct value.
Alternatively you need the BigNumbers library.

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3. NJDude and wonder like this.
4. It worked!! Thank you so much!! It's the second time you save my code this week!! Thanks man!!!   RandomCoder likes this.
5. Because you ask interesting questions in a way I can try them NJDude, wonder and RandomCoder like this.
6. I woke-up yesterday with the urge to build a miniature solar system. I'm trying to get stable orbits while inputing real data.
So far all I managed to do, was to crash a few planets into the Sun.

Files: Photoshop concept art: 7. If you are applying a singular force to the planet that is where it will go?
I'm not sure what other forces play a factor to keep it in orbit.

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8. Well, I haven't got it to work properly yet, but last night I was temporarily able to get some stable orbits.

I have only two velocity vectors. Vector A is the planet's linear speed (30 km/sec).
Vector B is perpendicular to vector A and it's accelerated towards the Sun.
Code:
`Sub Acceleration_Towards_The_Sun(planet_index As Int) As Double    Return (G * SpaceBody(Sun).Mass) / Power(Distance_Between_Two_SpaceBodies_in_Meters(planet_index, Sun), 2)End Sub`
Once I have it all figured out, I'll share the code. 9. I need to take out my old books but I believe vector B needs to be a combination of the centripetal and centrifugal forces that would keep 'r' constant.
Let me know whenever you make more interesting progress!

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