there is no such force as centrifugal; it's just used to describe inertia a certain way. anyway the earth is massive so it has gravity and attracts thing to it. since you are also spinning with the earth you do not fly off. the ISS (international space station; if thats what you mean, does not create gravity in any way). you are probably thinking about how, in movies, they spin space stations to get artificial gravity. in that case the thing is not massive enough to have its on gravitational pull of any decent magnetude, so the inertia (centrifugal force) of your body wants to make you fly away from it. people in the movies walk on the inside of a spinning ring.
however in the movie armegedon the did something a little different, and totaly impossible, with the mir spacestation.
Jack P: everythin you've said is totaly wrong. the earth is rotating at ~800 mi/hr, plenty fast to throw you off if there was no gravity, which is NOT produced by the atmosphere!
2007-01-15 15:14:37
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answer #1
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answered by Dashes 6
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The gravity of the earth is attributed to its mass and is a much greater force than the centrifugal force created by its rotation. Objects with large mass such as stars and planets distort the shape of space so matter is bent around an object as it travels in close proximity (even light!). The force of gravity is powerful in the large scale but with smaller objects (space stations, most humans) their gravitational influence is negligible and centrifugal force (inertia) is the dominant force.
2007-01-15 21:07:40
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answer #2
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answered by founder_us 1
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The Earth's gravity isn't caused by centrifugal force. It's caused by the Earth's mass. If the Earth stopped spinning on its axis, you'd still be attracted downwards.
2007-01-15 15:15:52
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answer #3
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answered by zee_prime 6
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I have a theory on gravity. It involves planets with iron cores, magnetic fields, and electricity. Mars used to have a magnetic field and the planet has an iron core too. From various studies, it appears that there used to be some kind of atmosphere on this planet and it may have rotated faster in the past, further evidenced by the frozen ice caps remaining on the poles. Here's my theory- when you rub something, like plastic, against other materials and bring it close to a metal like iron, you can witness static electricity, which attracts certain particles, like cathions. Mass of objects also create attraction too. When you take into consideration electromagnetism (like experiments performed by Nicola Tesla), you can see unusual attractions of different atoms and particles, and even merging of different substances. In other words, the spinning of the Earth (with its magnetic iron core), may cause the friction necessary to generate the magnetic fields surrounding our planet that may cause the type of attraction, combined with the mass of our planet, in order to keep all kinds of matter attracted to our planet while we rotate without being thrown off. If this is true, the gravitational force would depend on both the mass of a particular planet in relation to its core structure, and the speed at which the planet rotates in order to maintain its magnetic field.
2007-01-15 15:40:19
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answer #4
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answered by Anonymous
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The earth rotates too slow to "throw" objects away, and our atmosphere is what makes the gravity
2007-01-15 15:13:50
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answer #5
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answered by Jack P 3
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