2006-12-13 05:58:22 · 14 answers · asked by gauravnijhawan 1 in Science & Mathematics ➔ Astronomy & Space
One revolution per day isn't very fast. Centrifugal acceleration at the equator amounts to about 0.0034 g - nothing you'd notice.
2006-12-13 06:17:46 · answer #1 · answered by injanier 7 · 0⤊ 0⤋
Simple. The speed of the Earth's surface is relative to it's size. And the gravity is strong enough to keep the heaviest objects down, including the atmosphere. A psuedo-example can be made of a wet baseball. If you were to just toss it up and down in one hand, it would remain wet. Yet, when you pitch it as fast as you can, the water is forced off of it mainly by atmospheric resistance. What I am trying to indicate is that it's the speed relative to the size of the object, in this case Earth, that determines whether objects upon the surface cling to it or are flung off. I wish I could have a better analogy.
2006-12-13 15:51:25 · answer #2 · answered by Awesome Bill 7 · 0⤊ 0⤋
Put simply: Gravity. The force that holds everything to Earth. At the equator, the Earth is spinning at about 1000mph. It would have to speed up considerably before it would start throwing things off.
Jupiter spins at 28,000mph and even this isn't enough to throw it's gas/liquid/atmosphere into space.
It would take a lot of speed to overcome the force of gravity!
2006-12-13 14:22:08 · answer #3 · answered by Feckpot 2 · 0⤊ 0⤋
Let's see. The earth is about 25000 miles in circumference. And it takes 24 hours to spin once on its axis. You'd be travelling fastest at the equator, so there you'd be traveling at 25000/24=1041.67 miles per hour. The velocity needed to reach orbit is 17,500 miles per hour, and escape velocity is 25,000. Since 1042<17,500, that means that even if you lift off, you'll always come back down due to gravity.
2006-12-13 15:29:24 · answer #4 · answered by Egghead 4 · 0⤊ 0⤋
gravity. the earth is rotation at a high speed, but everything on it is going at the same speed. it is like a fly in a car. the car is going fast, but the fly is going at the same speed but it doesnt effect it.
2006-12-13 14:02:23 · answer #5 · answered by catchup 3 · 0⤊ 0⤋
Once per day is not a fast rotation even though the equator is traveling at 1000 mph.
2006-12-13 14:03:32 · answer #6 · answered by Anonymous · 0⤊ 0⤋
The gravitational pull of the Earth is a stronger force than the acceleration of the Earth.
2006-12-13 14:03:40 · answer #7 · answered by Amanda P 2 · 0⤊ 0⤋
Gravity.
2006-12-13 14:18:01 · answer #8 · answered by C C 3 · 0⤊ 0⤋
It's called GRAVITY! Newton's Law of physics: the force that compelles two objects with mass toward each other.
2006-12-13 14:02:59 · answer #9 · answered by Compurednek 3 · 0⤊ 0⤋
It simply doesn't rotate quickly enough for that to happen.
2006-12-13 14:01:23 · answer #10 · answered by Gene 7 · 0⤊ 0⤋