2007-12-21 00:52:16 · 17 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Actually, we do. We don't feel it as a tangential motion, but rather as a lessening of the downwards force of gravity. It's not actually a change in the force of gravity, but instead an effect that seems to act as a force that opposes gravity. If the Earth were to spin fast enough, we'd fly off the surface and you can bet we'd feel it. But at the Earth's actual, relatively slow speed of rotation, this effect is much smaller than the force of gravity. As a result, while it is measurable and detectable, human beings don't normally notice it.
The centripetal acceleration due to a circular motion is a = v^2 / r. In this case, velocity v is the speed of rotation of the surface of the Earth (let's say at the equator), 465 m/s. Radius r is the radius of the Earth, 6371000 m. The resulting acceleration is 465^2 / 6371000 = 0.034 m/s^2, two orders of magnitude smaller than the acceleration due to gravity, 9.8 m/s^2.
2007-12-21 00:57:15 · answer #1 · answered by DavidK93 7 · 0⤊ 0⤋
as many people have said, 1000mph and we dont feel it because of the scale of the earth and its relative 'slowness' the speed varies. at the equator it moves a lot faster and the poles a lot slower however it would still take you 24 hours to fully revolve at any point. an additional couple of points that no one else seems to have picked up on are 1) the moon. the moons gravitational pull on the aerth actually keeps us rotating at a steady rate in a continual orbit. without it we would spin all over and not have the regulated daylight hours or seasons we have now. additionally the moon is moving away from us at quite a rate. soon (in terms of the universe) it will loose its pull with us and orbit the sun independantly. still we have a long time before that will happen! a few hundred thousand years or so! 2) the spin of the earth contributes much to us that we are not always aware of. it causes weather systems like hurricanes amongst other things.
2016-05-25 07:13:28 · answer #2 · answered by Anonymous · 0⤊ 0⤋
the earth spins at such a slow speed it takes sensitive equipment to detect the motion.
which is a good thing, I don't like to fall.
2007-12-21 00:56:01 · answer #3 · answered by . 3 · 0⤊ 0⤋
Lay on your back at nite and watch the stars...you can't feel it but you will see the earth rotating very slowly.
The gravitational pull of the earth keeps us from feeling any movement.
2007-12-21 00:55:47 · answer #4 · answered by Veritas 7 · 0⤊ 0⤋
Because we are spinning along with it and since it is the source of gravity for us, it is our reference for motion.
i.e. as long as you are moving along at the same rate as the Earth, you feel stationary because it is your point of reference (because it generates the gravity that cause you to feel motion).
2007-12-21 00:55:27 · answer #5 · answered by Anonymous · 0⤊ 1⤋
we are so small compared to the earth that we can't sense it's movement.sort of just like if an ant was on a semi truck they wouldn't be able to sense that it was moving at all. and it's also because the earth travels so fast
2007-12-21 00:56:43 · answer #6 · answered by ιℓℓσgι¢αℓ 5 · 0⤊ 1⤋
- Our planet is around 8,000 miles in diameter and it takes almost exactly 24 hours to rotate. Hence we cant feel it due to large area and we too revolving around.
- But you can feel a little if you look in to sky.
2007-12-21 01:02:51 · answer #7 · answered by cpt_82 2 · 0⤊ 0⤋
because the earth is sooooo big and it take 24 hours to complete a revolution...
2007-12-21 00:56:44 · answer #8 · answered by Anonymous · 0⤊ 0⤋
According to my science teacher, its because we are used to it spinning so we just don't feel it. We are born with it spinning so we are used to it. But that's just my science teacher!!
2007-12-21 00:55:50 · answer #9 · answered by Anonymous · 0⤊ 1⤋
Huh? What do you mean "why don't we fell the earth spinning?".
2007-12-21 00:55:26 · answer #10 · answered by flyinghighfreebird 4 · 0⤊ 3⤋