Message from @hgb
Discord ID: 675491967584436257
following inverse gravitational square law
That's what the centre of mass method predicts, right?
no?
i just told you
But in reality, if you're there, obviously, your gravity would be less than g
the inverse gravitational law
thats not true
Okay.
Think about it.
You're at the centre of the earth. Inverse square law predicts near infinite force there, correct?
no
Well say 0.0000001 m away from centre of earth
ok
You would have a humongously large force
But
You have equal mass in any direction from you.
See what I mean?
The centre of mass model is good if, well, we consider masses to be point masses.
But not so otherwise.
Because if I cut the earth into two, and stand in the middle, then they would exert equal and opposite force on me
Which contradicts the prediction made by considering solely the centre of the earth
They would now be two different objects. their gravity would be reliant on the mass of each half. It would not be equal as each half of the earth is not equal
Which is I would have a massive force on me, and the immediate moment I cross the centre, that massive force inverts in direction.
Yea
Do you genuinely believe this
That in the dead centre of the earth, I have infinite force
so for a split second you would feel the force decrease to 0 as you have an opposite and equal force applying pushing you into an equilibrium
no
because
Yes,
But
that implies an infinite mass
On the two sides
which is doesnt have
You have a duck load of force
Yea
not infinte
or close
Why is the centre of the earth not a singularity then xD
If it has so much force