Gravity

[wobs]

What if the ISS was positioned on a theoretical treadmill?

The gym fees would bankrupt it.

 

[Mikefromlondon]

what truth? based on estimates and guesses, I could come up with similar figures, ain't bloody hard is it? But it is no where near even close to real mass, because we have no means to confirm or validate it.

For a start, earth isn't a perfect hemisphere, it is slightly flat at North and South Poles, so the way to work out mass of any object is to measure its volume, multiplied by its density, which again is based on an average value.

 

[JBR]

For a start, earth isn't a perfect hemisphere

I sincerely hope not or we'd all fall off the edge!

 

[jeds]

what truth? based on estimates and guesses, I could come up with similar figures, ain't bloody hard is it? But it is no where near even close to real mass, because we have no means to confirm or validate it.

For a start, earth isn't a perfect hemisphere, it is slightly flat at North and South Poles, so the way to work out mass of any object is to measure its volume, multiplied by its density, which again is based on an average value.

Not a perfect hemisphere? I should hope not. We'd all be in trouble. (ok, more trouble)

 

[JBR]

Not a perfect hemisphere? I should hope not. We'd all be in trouble. (ok, more trouble)

One hour later!

Hey, you've not got me on ignore, have you? What did I do?

 

[sooey]

You should be used to MikefromLondon talking nonsense by now. At least he's not called Muhammed.

 

[JBR]

You should be used to MikefromLondon talking nonsense by now. At least he's not called Muhammed.

No I'm talking about jeds copying me!

 

[ajstoneservices]

This thread has confused the hell out me( easy I know) I thought gravity was a force acting on an object. I didn't know an object could contain gravity

 

[sooey]

Gravity is a fundamental property of mass, so any object with mass 'contains gravity' as you put it.

 

[gregers]

there was an excellent program on bbc4 last night all about the earth/sun supernova's/red giants/black holes etc.very informative,see if its on the bbc i player?well worth a watch.
here you go,

http://www.bbc.co.uk/iplayer/episode/p00yb434/Seven_Ages_of_Starlight/

all told by proper experts.

 

[jeds]

Not a perfect hemisphere? I should hope not. We'd all be in trouble. (ok, more trouble)

One hour later!

Hey, you've not got me on ignore, have you? What did I do?

Sorry, was distracted by the phone half way through - Western Power. No conversation with them takes less than an hour and a half. Should have had a look before pressing submit.

 

[misterdubya]

This thread has confused the hell out me( easy I know) I thought gravity was a force acting on an object. I didn't know an object could contain gravity

Weather Comp does. Just ask ALEC.

 

[JBR]

Not a perfect hemisphere? I should hope not. We'd all be in trouble. (ok, more trouble)

One hour later!

Hey, you've not got me on ignore, have you? What did I do?

Sorry, was distracted by the phone half way through - Western Power. No conversation with them takes less than an hour and a half. Should have had a look before pressing submit.

No problem! I was joking!

 

[wobs]

there was an excellent program on bbc4 last night all about the earth/sun supernova's/red giants/black holes etc.very informative,see if its on the bbc i player?well worth a watch.
here you go,

http://www.bbc.co.uk/iplayer/episode/p00yb434/Seven_Ages_of_Starlight/

all told by proper experts.

Cheers for that.
The problem with BBC4 is that its too damn good. So many programs to watch, I never seem to have time to watch them!

 

[wobs]

Duplicate post.