Yeah, I'd also guess Cold-co is saying something along those lines. Cold-co, I don't see how these numbers make sense:
Code:
Radius gv cold gh cold gv hot gh hot gv aver gh aver
6371 9.8331 10.0604 9.9307 8.0385 9.8253 9.7883
I'm at about r=6371 km right now and I don't feel 10 m/s^2 "horizontal acceleration". The only acceleration I feel is downward. I would probably guess that you don't mean acceleration in the usual sense.
I don't know how you found those numbers, but I'll show you how I would do it. Consider a spot at the inner / outer core boundary r = 1,220 km (1220000 m). The mass beneath this spot is roughly
kg and the mass above it (at larger values of r) is roughly 60 times greater. The mass above can safely be ignored by the two proofs I gave the other day and the mass below follows:
The gravitational acceleration at r= 1220 km (the inner / outer core boundary) is roughly 4.53 m/s/s toward the center. To calculate the pressure at this point we would need to consider the weight of the material above it.
Would you object, Cold-co, if I split this discussion about your model into it's own thread perhaps titled "Cold Core Model of Earth's Structure"?
~modest
