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Re: Belief in Earth's Iron Core still puzzling
Quote:
Originally Posted by Cold-co
...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. ...
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The statement that I have bolded -- I do not understand. I have never heard of a "bidirectional vector". I do not understand why a force of any kind cannot be canceled by an equal but opposite force of the same kind.
Please explain this.
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