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Author Topic: Has Earth's gravity changed recently?  (Read 7856 times)

noel eastwod

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Has Earth's gravity changed recently?
« on: 05/06/2009 08:30:02 »
noel eastwod asked the Naked Scientists:
   
Is it possible that gravity has changed?

If we were once the same as the moon is now wouldn't this answer a few questions ?

(1) Dinosours could have easly been able to hold up there bulk
(2) the pyramids bricks would have felt as heavy as polystyrene... is our way of measuring gravity not accurate because what we measure with  with also getting heavier?

Please help me with this as is is driving me crazy..

thanks, noel

What do you think?


 

Offline Daerana

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Has Earth's gravity changed recently?
« Reply #1 on: 05/06/2009 13:06:50 »
For the gravity to increase wouldn't that mean that the Earth's mass has also increased?
 

Offline Chemistry4me

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Has Earth's gravity changed recently?
« Reply #2 on: 06/06/2009 00:16:51 »
Since I haven't gained any weight recently that must be a no. :)
 

Offline Daerana

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Has Earth's gravity changed recently?
« Reply #3 on: 06/06/2009 00:17:30 »
Since I haven't gained any weight recently that must be a no. :)

nor me :)
 

Offline Daerana

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Has Earth's gravity changed recently?
« Reply #4 on: 06/06/2009 00:18:27 »
And I did mean a little more of an increse than a few kilos C4M.  ;D
 

Offline Chemistry4me

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Has Earth's gravity changed recently?
« Reply #5 on: 06/06/2009 00:19:56 »
Huh?
 

Offline Daerana

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Offline Chemistry4me

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Has Earth's gravity changed recently?
« Reply #7 on: 06/06/2009 00:21:31 »
And I did mean a little more of an increse than a few kilos C4M.  ;D
What did you mean by this sentence?
 

Offline Daerana

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Has Earth's gravity changed recently?
« Reply #8 on: 06/06/2009 00:23:07 »
You said that you havn't gained any weight so it must be a no.  I said that the amount of wieght would have to be a bit more than what one person could put on.
 

Offline Chemistry4me

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Has Earth's gravity changed recently?
« Reply #9 on: 06/06/2009 00:25:03 »
If gravity has increased, I would get heavier, which I haven't.
 

Offline Daerana

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Has Earth's gravity changed recently?
« Reply #10 on: 06/06/2009 00:32:36 »
Oh, that's what you meant.  I thought that you were saying that you havn't put on weight, therefore making the mass of the Earth increase (which wouldn't work anyway because the weight you had put on would have come from somewhere else on the Earth, maaking no overall difference).
 

Offline Bored chemist

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Has Earth's gravity changed recently?
« Reply #11 on: 06/06/2009 17:02:58 »
If gravity had changed it would have affected the Moons orbit etc. Since the ancient astronomers kept quite good records of the moon etc. we know that gravity hasn't changed.
 

Offline Yomi

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Has Earth's gravity changed recently?
« Reply #12 on: 07/06/2009 20:22:39 »
Its stagnated from the begining
 

Offline Bored chemist

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Has Earth's gravity changed recently?
« Reply #13 on: 08/06/2009 18:55:13 »
Was that actually meant to mean anything?
 

Offline BigLuca

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Has Earth's gravity changed recently?
« Reply #14 on: 19/07/2009 23:19:17 »
Sorry to Lazarus a thread, but I had to respond to this one.  An expanding Earth is actually championed by these guys newbielink:http://www.expanding-earth.org/ [nonactive].  It's all pseudoscience obviously, but if you like science fiction it is a good read.

If I ever become a millionaire I want to fund a debate between those guys and these guys newbielink:http://www.theflatearthsociety.org/forum/ [nonactive].  I would be like watching an extra 21st chromosome slap fight!
 

Offline tangoblue

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Has Earth's gravity changed recently?
« Reply #15 on: 28/07/2009 16:35:14 »
If gravity had changed it would have affected the Moons orbit etc. Since the ancient astronomers kept quite good records of the moon etc. we know that gravity hasn't changed.

Well I don't know how to break this to you but... the moons orbit has changed.
 

Offline Chemistry4me

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Has Earth's gravity changed recently?
« Reply #16 on: 29/07/2009 05:10:00 »
Yes, it's moving further away.

http://curious.astro.cornell.edu/question.php?number=124

But I think Bored chemist already knew that.
 

Offline scalyblue

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Has Earth's gravity changed recently?
« Reply #17 on: 30/08/2009 08:23:51 »
if the gravitational constant of the universe ( Earth is in the universe, after all ) were to change, the results would be catastrophic.  I'm not going to get into it, you're smart enough to do your own research

newbielink:http://www.smbc-comics.com/?id=807 [nonactive]
 

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Has Earth's gravity changed recently?
« Reply #17 on: 30/08/2009 08:23:51 »

 

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