Maybe I am using the wrong terminiogy for what I am trying to explain but I am just curious. Has it changed at all or is it entirely dependent on the spin of the earth? My husband gave me a funny look for this one. o_O
2006-09-13 20:20:07 · 14 answers · asked by momsapplepeye 6 in Science & Mathematics ➔ Physics
Thanks but that is very rude lol how do you know my 10 year didn't want to know. And I was not referring to some dramatic change or she wasn't lol again O_- BUZZZzzz
2006-09-13 20:27:54 · update #1
Wonderful this is what I was trying to articulate. It is going to be difficult to choose when the time comes. Very interesting answers!.
2006-09-13 20:42:57 · update #2
Earth's gravity gradually, and imperceptably, increases over the eons, due to the constant falling to earth of space dust which gradually increases the Earth's mass (seen as meteors when particles the size of sand grains and larger enter the atmosphere). Certainly Earth's gravity increased some when a Mars sized planetoid smacked into the ancient Earth, adding a huge amount of mass to the Earth while blowing off enough surface crust material to create a temporary ring of material that clumped into what became our moon.
However...Earth's gravity has NOTHING to do with the spin of the planet. Gravity is caused by MASS...the more Mass the more gravity. Planetary spin has no influence on earth's gravity.
2006-09-13 20:41:11 · answer #1 · answered by Wt heck? 1 · 2⤊ 0⤋
Very interesting question, which could leave room for debate. First we have to understand Gravity. We not really sure how it work. But, I watched an interesting thing on Discovery Channel one day and they were discussing Flying Saucers and the various ways they may work. One thing they Theorize is gravity may be the result of the Earth's Magnetic Field. To prove this thought they were floating a Frog around using Magnetics. So, if this how we have gravity, then there could possibly be minute fluctuations in the magnetic field that may cause gravity to change. Though it would not be very noticeable as stated we would see body weight change, but, if it only a very small change then it may go un-noticed.
2006-09-13 20:33:56 · answer #2 · answered by Snaglefritz 7 · 1⤊ 0⤋
Yes it is changing with time becasue the earth is OVAL shape. The longer the distance against the central point, the weaker as it seems to be until at one distance... maybe at stratosphere i guess.. then the gravity will become 0.
If you are on the land of your own home, you may also observe change in the gravity. But, in a very tiny changes.. that not even observable with 9.81 ms-2. maybe a few more decimal below this value :)
2006-09-13 21:11:12 · answer #3 · answered by Mr. Logic 3 · 1⤊ 0⤋
it changes....
-depending on where you are in the world..meaning how distant you are from the centre of the earth. therefore gravity is considered less (g value is smaller) in the equator and larger in the poles.
-Height..for the same reason R the distance changes. even in an elevator your weight changes. mountain sights or places with altitudes have different g
_other reason..moon attraction and oriantation ets (this is more than a net effect meaning that it cancells or make greater the attraction of the earth.
so it changes.
2006-09-13 20:29:12 · answer #4 · answered by Emmanuel P 3 · 1⤊ 0⤋
Wow. That's a heavy question. Quite a weighty issue. Gravity is constant. But the more something weighs the more gravity pulls against it.
2006-09-13 20:28:49 · answer #5 · answered by eugjoh 2 · 1⤊ 0⤋
Spin has nothing to do with gravity, although it does have an effect on us. Cosmologists think that the earth's gravity is constantly increasing due to accretion, but the increase is quite slow, as the acceleration due to gravity hasn't changed (when expressed to 3 significant digits) since Newton's day. He used 32.2 ft/sec/sec and so do we.
2006-09-13 20:27:56 · answer #6 · answered by Helmut 7 · 1⤊ 1⤋
yeah, gravity always fluctuation in nature ,, with very high Frequency .
Example ; if you r Driving Bicycle at Moving Time you will not but when you slow down Speed or Stop you will Fall Down . at moving time you r Adjusting Balance Against Fluctuating Gravity .
2014-08-07 07:01:27 · answer #7 · answered by Tony Singh 1 · 1⤊ 0⤋
Gravitational forces depend on mass. I think you are referring to inertia.
Gravity in any practical sense is constant, unless acted upon by another force.
2006-09-13 20:37:25 · answer #8 · answered by Neil S 4 · 1⤊ 0⤋
it does actually fluctuate fairly regularly but the main "core" of gravity stays the same for us.
it's the outer edges os the gravity bubble which change, as mentioned because of molten materials shifting.
not a stupid question at all.
2006-09-13 20:27:01 · answer #9 · answered by moominboy1982 3 · 1⤊ 1⤋
It changes slightly as molten material shifts around deep in the earth. But it requires sensitive instruments to see it.
2006-09-13 20:24:22 · answer #10 · answered by Anonymous · 1⤊ 1⤋