NewScientist The Last Word - Tag 'gravity' details

Tag 'gravity' details

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What makes up gravity? Is gravity some kind of pure energy? If yes, how does it affect the world around it in such a large way? If no, how it is "transported" around the universe?
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Asked by Tom96
on 2010-01-14 20:24:43

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Last edited on: 2010-01-14 20:26:13

Categories: Our universe.

Tags: gravity, particles.

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Gravity Conundrum After arguing about it for an hour or so, a friend and I are confused about what would happen if you were in the centre of the earth. That is, you were in a spherical chasm in the exact centre of the earth, and the earth was a perfect sphere. Ignoring the heat and lack of oxygen, what would the gravity of the earth do? Pull you apart, crush you, or nothing?
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Asked by ultrapingu
on 2010-01-05 14:08:23

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Categories: Planet Earth.

Tags: gravity.

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If a hole were dug right through the earth and an object were dropped into it would it come to a halt at the centre of the earth disregarding the heat etc would gravity hold the object suspended at the centre of the earth
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Asked by rigamax
on 2009-12-22 15:58:54

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Categories: Planet Earth.

Tags: gravity.

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I assume centripital force applies to us as the earth rotates. How much heavier would we be if the planet wasn't spinning?
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Asked by AlanH
on 2009-12-03 18:17:38

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Categories: Planet Earth.

Tags: gravity, Weight.

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If you dug a hole through the Earth and jumped in then would you go right through or float somewhere near the middle? My son asked this question which I can't answer! Assume that the hole goes right through, i.e. no core.
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Asked by ElliotandDad
on 2009-11-20 19:03:19

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Categories: Planet Earth.

Tags: gravity.

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If a human grows up in space, what sensations (e.g. coriolis) would they not be used to upon visiting earth? Aside from bone and muscle differences, which have already been covered. For example, someone who grows up without being spun around at 400m/s as the world spins; would they feel as if they were spinning when they set down or entered orbit?
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Asked by TheMonk
on 2009-11-17 19:38:01

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Last edited on: 2009-11-17 19:38:53

Categories: Our universe.

Tags: Space, Earth, gravity, body, atmosphere, orbit, spin, Spaceenviroment, coriolis.

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Why hasn't the moon hit the earth yet?

I don't know when it was created, but supposedly it was a long time ago, like billions of years ago. You'd think by now, with it being only 250,000 miles away, that the earth's gravity would have pulled it in. What's keeping it back? Is it not a moon, like the Death Star? "that's no moon"? Supposedly the sun keeps pulling it away too, in the opposite direction, but I don't really get it.

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Asked by stalepie
on 2009-11-05 17:53:59

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Categories: Our universe.

Tags: gravity, moon.

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If the sun disappeared, how long would it be before the Earth no longer felt the effects of its gravity?
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Asked by chiefdalek
on 2009-10-11 15:48:09

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Categories: Our universe.

Tags: Earth, gravity, sun.

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If you pushed a object in space one direction would it keep on going the same direction forever or would it change directions
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Asked by koolkid
on 2009-09-24 21:10:01

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Categories: Our universe.

Tags: Space, gravity.

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Why does the atmosphere stay round the earth? The power of a vacuum is very obvious. Suction pads can defeat the earths gravity and lift a person up off the ground. So why does the vacuum of space not suck the air molecules away from earth, when the vacuum force is far greater than the earths gravitational pull? Am i overlooking something?
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Asked by rob.stass
on 2009-09-22 16:55:52