Well yes, but my point is that when you're really close to a planet (like on it) some of its mass will be pulling you sideways and downwards instead of just downwards. Mountains do that so all other matter will. Stands to reason.
Bill
Fancy maths has been devised to explain and predict what we know.
If it doesn't work then it's not being applied appropriately.
Can I make a genuine suggestion you consider a GCSE course in maths? It includes both vectors and calculus. Both are important aspects to the understanding of science.
Ah! I knew I was right.
Bill
You're not a Brexiter perchance?
If you were on the north pole, most would be pulling you "down", there would be some pulling sideways and down a bit, at each angle round the planet, but each side would cancel out the other, giving a new downward force.
Doesn't matter that you're at 54°N, what counts as "down"? It's still towards the centre (ignoring local effects)
Of course I am.
Bill
I'd rather pull my eyes out and shit in the sockets
Bill
Explains a lot...
"Common Sense is the name given to the set of prejudices acquired by age eighteen". A.Einstein
And there's me thinking you were interested in science?
Common sense leads to a lot of misunderstanding. It's also an oxymoron.
I wanted to do Chemistry and English. They said arts and sciences can't be mixed. So I did English and History and failed both.
I think you?ll find that?s the case anywhere on the earth?s surface.
Tim
Exactly the point I was trying to get across ... that "down" always means to the centre.
It happens that Bill Wright formulated :
The only force on the flag, is earth's gravity. All matter generates its own gravity, even a tiny speck of dust irrespective of where it happens to be in the universe. The have a mutual pull or attraction, each for the other.
The earth has a pull on the moon, heance the moon rotating around the earth. The moon has a pull on the earth, which causes a slight distortion of the earth, but the best example is the seas tides.
The flag is attracted by the earth's gravity, the earth is attracted by the flag's gravity.
...centre of mass.
I didn't know you were a contortionist :-)
Jim
You were talking about two forces pulling sideways *and downwards*
He's trolling. It's the only possible explanation.
Explains a lot.
This is correct and IIRC only requires A-level maths (or anyway A-level maths of 50 years ago) to prove it.
This is also correct. The g-force as you go down the tube declines linearly with distance downwards, to zero at the centre.
No, you *said* the inverse square law didn't apply, and you were wrong.
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