Discussion forum > General Discussion
Minecraft Science: Mass of the Minecraft Earth
mcoon1:
...Once again... what are you doing?
--- Quote ---Also, I would like to use Gauss's law for Earth.
g=(2*pi*G)pH
9.81=(2*3.141592654*6.67e-11)p*6378100
9.81=0.002672988p
p=3670.05 kg/m3
p=36700.5 g/cm3
By this calculation, the Earth is, on average, 1,902.566 times as dense as gold. Obviously something is wrong here.
--- End quote ---
This equation only works with an infinite planar region... like ME. The Earth is not an infinite plane, so this would not apply in the way that you tried. You can't just pick random equations and use them.
As for your mass equation... it doesn't work. Even a little. Even though you get an answer, it is the result of a misapplication of an incorrect formula. Gausse's law DOES work here for calculating the density of the MC earth, which you would then multiply by it's volume (easily determinable to get it's mass). I was showing that something is OBVIOUSLY going on that we can't see, since the density is so much greater than what we observe.
That is how science works... not random application of formulas.
CookieMaster:
ok. so what i learned us ..... potatoes a mamals
Wyboth:
--- Quote from: mcoon1 on February 06, 2013, 11:59:06 pm ---...Once again... what are you doing?
--- Quote ---Also, I would like to use Gauss's law for Earth.
g=(2*pi*G)pH
9.81=(2*3.141592654*6.67e-11)p*6378100
9.81=0.002672988p
p=3670.05 kg/m3
p=36700.5 g/cm3
By this calculation, the Earth is, on average, 1,902.566 times as dense as gold. Obviously something is wrong here.
--- End quote ---
This equation only works with an infinite planar region... like ME. The Earth is not an infinite plane, so this would not apply in the way that you tried. You can't just pick random equations and use them.
As for your mass equation... it doesn't work. Even a little. Even though you get an answer, it is the result of a misapplication of an incorrect formula. Gausse's law DOES work here for calculating the density of the MC earth, which you would then multiply by it's volume (easily determinable to get it's mass). I was showing that something is OBVIOUSLY going on that we can't see, since the density is so much greater than what we observe.
That is how science works... not random application of formulas.
--- End quote ---
I did a bit of research on Gauss's law. I found a video stating that it was g*A=4*pi*G*M, where g= gravitational acceleration, A=Area, G=Gravitational constant, and M=mass. Using this equation, I found M=1.553 * 1025 kg. This wasn't exactly what you had posted, however, so I will wait for your approval of this. The mass I found with Newton's law was 1.924 * 1025 kg, not too far off from what Gauss's law states. Assuming this new value is accurate, my percent error was 23.89%.
Wyboth:
I have done a little bit of Minecart kinematics. I have determined that their collisions are inelastic, contrary to my hypothesis. I will do further research this afternoon.
Booorad:
Booorad Logic (click to show/hide)People love to over think things, its a game, nothing more, nothing less.
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