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Started by Wyboth, February 01, 2013, 03:52:36 AM

Minecraft Science: Mass of the Minecraft Earth

mcoon1

...Once again... what are you doing?

QuoteAlso, 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.

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

#47
Quote from: mcoon1 on February 06, 2013, 11:59:06 PM
...Once again... what are you doing?

QuoteAlso, 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.

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.
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
[spoiler]People love to over think things, its a game, nothing more, nothing less.[/spoiler]

mcoon1

Can you post a link to the video that you watched? I want to put it in context for myself.

Wyboth

Sure, here it is: http://youtu.be/hGT2jf4P38o

The beginning is a bit wooey, but it gets to the law at 2:41.

Wyboth


iGenerator


Wyboth


RuthlessTomato


Wyboth

Quote from: That Goalie Guy on February 11, 2013, 11:33:52 PM
Quote from: Wyboth on February 11, 2013, 07:44:24 PM
Quote from: iGenerator on February 11, 2013, 05:32:05 AM
*rocks in a corner* Make it stop!
What?
I dont believe iGen understands physics, so he is trying to stop the brain hurt
Ok, I thought it had something to do with the bump.

RuthlessTomato


Wyboth