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Perhaps In A Universe With Only Two Objects

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Posted by Tim on April 24, 2003 15:40:12 UTC

but in the existant universe it is simply not true that Heaver objects do fall faster.

permitt a small quote sir:

"Heaver objects do fall faster.

The acceleration of two objects toward each other is equal to the sum of the two masses multiplied by the gravitational constant divided by the square of the distance between them."


not quite... try a=m1*m2/rr not a=(m1+m2)/rr

never the less one needs to be careful how one uses even the correct equation. to be fair to Einstein when using Newton's equations i should think we need to consider not only the two mass's involved but also the rest of the mass's in the universe. after all Einstein was shooting for generality with respect to gravity. this sense of fairness should also carry over to Galileo's interpretation that things of different weight fall at the same rate.

Objects that are more massive may be thought of as have more gravity pulling them toward the ground, BUT they also have more inertia. The two effects cancel each other out.

the site in question quite has simply gotten it wrong. a perfect example of why we need to be careful about accepting information we find on the internet.

regards tim

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