Everything around you is moving at the same speed.
It's like being in the car, going a steady 80 mph. Everything in the car with you is also going a steady 80 mph. You can see things passing by outside but in your local area everything is still and might as well not be moving at all.
The Earth is like that, but on a much larger scale. When you go outside everything else is rotating right along with you at the same speed, the ground, the trees, and even the atmosphere. So you don't feel the rotation at all.
2007-06-08 05:34:33
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answer #1
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answered by rbanzai 5
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Because the effects are too small.
Centrifugal force (at equator):
F = m*(w^2)*r (where, traditionally, w should be a lower case omega, a Greek letter that looks like a rounded w)
w = 1 turn in 24 hours = 2*pi (radians) / 24 h
w = 2*pi/86,400 s = 0.0000727
w^2 = 5.3x10^-9 s^2
r = Earth radius = 6.38x10^6 m
take m = 100 kg (220 pounds)
F = 100 kg * 5.3x10^-9/s^2 * 6.38x10^6 m
F = 3.38 kg m / s^2 = 3.38 N
The "weight" of a 100 kg person is 980 N
So, you are 0.3% less heavy at the equator, because of Earth's rotation (I don't feel it).
My ead is 2 m further away from the ground than my feet. Gravitational acceleration decreases as the square of the distance to Earth's centre.
My feet are at 6,378,000 m from Earth's centre.
My head is at 6,378,002 m from Earth's centre.
Therefore, gravity at my head is 'only' 99.99994% of gravity at my feet. Do you see the difference? I don't see the difference.
My feet and my head make it once around the Earth in 24 hours. Yet, my head must travel a circumference that is 2*pi metres longer than what my feet must travel.
My head must be moving 0.00003% faster than my feet, which means that I am 'spinning' around my navel once every 24 hours.
Wow. That's some loop-the-loop. No need to go to the amusement park after that ride!
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And I didn't even talk about the Coriolis effect.
Living on this planet is a real torture.
;-)
2007-06-08 05:56:18
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answer #2
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answered by Raymond 7
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Makes about as much sense as asking why Chinese have a long eye. Because they do.
Physical change like acceleration outward requires significant and sudden change in the speed of rotation in order for us to feel anything. The Earth rotates smoothly and constantly, and we rotate with it. We don't feel any changes because there aren't any.
2007-06-08 06:24:37
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answer #3
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answered by Anonymous
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Your question is definitely sensible. Fact that earth and air having different densities are equally carried by said rotation of earth is strange!
'Creatures having superior sense organs ' live on said separating plane of earth and air (which is a fluid of light mass). Yet no creature feel any affect (caused by change in densities of earth and air)!
Whatever I say on this subject could be a matter of commonsense or it could relate a past knowledge!
If you want to know value of your eyes just close it and walk a furlong! It implies there is a way to check it whereas you canot arrive at a logical answer to your question!
Honestly, I don't know much about cause of said rotations!
Regards!
2007-06-08 22:11:27
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answer #4
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answered by kkr 3
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what exactly do u mean by physical changes? the various occurences lik wind, cyclones etc arise due t earth rotation....n v do feel the wind....but i ges u want t ask y dont v feel the force of earth rotation ,,,,,,,,right?? so dts coz of the strong gravitational force of earth .....that is the force of gravity......had ther been no force of gravity den on earth den v wud hv surely felt the earth's rotation... another explanation s dat earth s a very large body.....hence rotation nt felt....k.
2007-06-09 21:16:37
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answer #5
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answered by shruti t 1
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There are changes as the gravity field changes; except its so minute that we hardly notice because the accelleration of the earth change very slowly and by small incremental amount, as it orbits the Sun.
The Reason one does not feel the motion of the earth is based on Galileo's Principle of relativity. If two bodies are moving at the same speed, relative to each other they are not moving
2007-06-08 11:50:38
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answer #6
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answered by goring 6
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The earth is not running on any terrain. it is also not attached to any mechanical parts of heimaginary axis running along the poles . it is spinning in vacuum.nothg can b smoother than that .So it has no vibrations .Even the air blanket onn its suface is running along with its surface at almost the same spped as he eah itself and so we do nt feel any dtag also. this is because of the gravity that the earth exerts on all the subatances on its sufrace .the speed of roation is also trmendous as it is in excess of about 1100 miles per hour .as the circumfrence of he eath which is approximately around 28000 miles make one rotation in 24 hours .the earth alsoexerts the force of gravity oin us as much as on anything onits suface .under the circumstances it is absolutely impossible to feel any physical efect of he rotation of he earth.We can experience this by travelling on an air craft .even when he air carft is trvelling within the airbalnket on the suface of the earth, we do not have any feeling of travelling when in mid air as we feel no vibration except when ther eis some tubulence in the AIR .
2007-06-08 15:46:24
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answer #7
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answered by Infinity 7
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Because it is rotating so slowly. If you were on a one revolution per day merry-go-round, you couldn't feel that moving either.
Of course Earth is big so that the equator is going a thousand miles per hour, but that is totally smooth motion with no wind or vibration, so you can't feel it, and you aren't turning fast enough to feel dizzy.
2007-06-08 07:14:55
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answer #8
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answered by campbelp2002 7
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We can't detect any sign of motion due to the smoothness of the earth's rotation, we will notice noting unless a change occurs.
2007-06-12 02:42:13
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answer #9
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answered by johnandeileen2000 7
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b6473d82e47c479ca94a81a5daeff14why dont we sense dizziness via fact earth is rotating continuously.QUOTE on the fee of one turn each 24 hours, keep in mind that one. attempt this: take sooner or later off from artwork/college and twirl around your self at a velocity that it takes 24 hours to make an entire turn, and spot no count number in case you sense dizzy.
2016-11-07 23:16:52
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answer #10
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answered by chatan 4
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