2006-12-08 05:43:42 · 6 answers · asked by praveen 1 in Science & Mathematics ➔ Astronomy & Space
If you measure 2 metres tall and if you stand on the equator, both your feet and your head are going around in 24 hours. Yet, your head is 2 m further from Earth's centre than your feet are. Therefore, your head travels a circumference that is 12.5 m longer than the one your feet follow. That is a difference of 0.5 m/hr (or 0.0005 km/h) between your head and feet. Your feet are already travelling at 1666.666666... km/h; you head travels at 1666.6672 km/h. Your body does not notice the difference.
However, if you were on a space station where artificial gravity is provided by rotation, then the radius of rotation would be much smaller than the radius of earth. The difference could be noticeable and you'd feel dizzy (until your body got used to it or until you'd be taken off for medical reasons).
2006-12-08 05:56:15 · answer #1 · answered by Raymond 7 · 0⤊ 0⤋
I'm not sure, but I think you're referring to the dizziness or giddy feeling when we turn in circles. If that's the case, we feel dizzy because we upset the balance in the inner ear. That's what helps us know if we're up, down or sideways. The feeling is usually temporary, although, it can make us fall down unless we practice it and get adjusted to the whirling around.
Ever heard of the Whirling Dervishes? They practice whirling as a form of meditation and prayer. They are quite famous.
Put WHIRLING DERVISHES in the Google or other search site and see the very interesting sites to explore.
As for how we stay on our revolving earth...Gravity, plain and simple. Look that up for another thrill in exploring our World.
2006-12-08 14:05:10 · answer #2 · answered by TexasStar 4 · 0⤊ 0⤋
Gravity "holds" us down.
As to why we do not feel giddy or dizzy from being spun around on the Earth:
It all has to do with acceleration and what you can see with your eyes. Even though we are spinning around with the Earth we are not accelerating. As an example think of when you ride in a car. When you push on the gas you accelerate and feel pushed back in your seet. But when you hit the cruise control and go a constant 65 you do not feel acceleration and are not pushed back in your seat.
The same is true with the Earth. It is not speeding up or slowing down so we do not feel acceleration.
The second part is what you can see. When you look out your window at home you do not see things wizzing by you at great speeds. Even at nigh when you look up at the stars they do not move fast enough to give you a feeling of speed (or to even really see them moving).
So you do not feel the sensation of moving and you do not really see your self moving. There for you do not feel giddy or dizzy.
2006-12-08 13:56:45 · answer #3 · answered by me 3 · 0⤊ 0⤋
The earth is spinning 1,000 mph at the equator. The escape velocity is 17,000 mph. The earth would have to spin 17 times faster to throw us off.
2006-12-08 14:34:27 · answer #4 · answered by Anonymous · 0⤊ 0⤋
When you swing yourself around, you are moving abruptly with respect to the earth's gravity. This causes the fluid in your inner ear to move and slosh around quickly which causes dizziness and nausia.
2006-12-09 01:03:15 · answer #5 · answered by ZeedoT 3 · 0⤊ 0⤋
we can say that w r revolving around earth but u donot feel it because everything around us is moving like us. so, we donot feel any difference
2006-12-08 21:43:58 · answer #6 · answered by Aditya N 2 · 0⤊ 0⤋