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Re: Belief in Earth's Iron Core still puzzling
To All:
When I was taking integral calculus in 1960 the prof said you can always check your answer with trigonometry. That statement is what prompted me to run a check on the gravitational forces within the earth. A few years back I was recovering from a heart bypass and had plenty of time to think about the problem and devised a way to trigonometrically calculate the forces (accellerations) of gravity from Newton's original proof that all mass can be considered to be located at the center, which makes it a point mass. Now, I could have easily looked at my schematic of forces diagram and concluded that horizontal vectors cancel out, as they do when using calculus, because calculus employes directional vectors; but directional vectors is not the nature of gravity, it is a bidirectional force and a bidirectional force cannot be cancelled by another bidirectional force, only matched in strength.
Charlie O posted a link to my PowerPoint presentation, which explains the reasoning behind my concern.
Modest: I know you would like to be rid of Charlie O and me, but we are talking earth science here. so I think this is where we belong.
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