Well, had a debate about gravity, and was wondering, does gravity pull down, or does it pull in, towards the Earth's core? Are down and in the same thing, or are they differant? If they are differant, how so? Please provide any examples and referances for this question.
2007-10-25 05:30:19 · 5 answers · asked by Obsidian 2 in Science & Mathematics ➔ Physics
Gravity is nothing more than a warp caused in space-time by mass. Put a bunch of marbles on your mattress. Now put a bowling ball in the middle of your mattress. You'll see the marbles falling towards the bowling ball, because of the indentation it makes on the mattress' surface. Gravity works in the same way with the notable exception that the "indentation" done in space-time is done by the body's center of gravity (the central point of the body. In the case of the bowling ball example it would be as if the indentation on the mattress was made by the center of the bowling ball instead of the surface of the bowling ball).
2007-10-25 06:03:46 · answer #1 · answered by MSDC 4 · 0⤊ 0⤋
down is a relative direction. If you stand on your head, then gravity is up to you. The term in could be more precise. I would just say the pull of gravity is toward the center or core of the earth.
2007-10-25 05:40:27 · answer #2 · answered by Kevin 5 · 1⤊ 0⤋
In this case, 'down' and 'in' are pretty much the same thing. But an even better word would be 'towards' the center of the Earth (or any other mass).
The gravitational acceleration exerted by any mass 'acts' as if all of the mass were concentrated at a single point called, cleverly enough, the 'center of mass'. For a sphere of constant density, this point is the center of the sphere.
Doug
2007-10-25 05:38:37 · answer #3 · answered by doug_donaghue 7 · 1⤊ 0⤋
There is no mysterious lepricon at the Center of the earth that pulls you down.
Things are held down by the pressure of a substance that exists in the volume of the Universe .This phenomenon of pressure inherent in space that pushes object together is Called Gravitation.
There is no pull that exists without a push.
Note ,in order to pull a wagon you first have to push down on the Ground.
And the Idea that the so called Black Holes pull object in ,because there is inside something of a magical atoms and structure ,is a misnomer.
2007-10-25 05:57:31 · answer #4 · answered by goring 6 · 0⤊ 0⤋
it pulls you towards the core. we only see it as being pulled down because we've evolved and adapted to walking upright.
2007-10-25 05:38:03 · answer #5 · answered by Anonymous · 1⤊ 0⤋