Why don't we feel the rotation of the earth?
366990
Because you are rotating at the same speed too, and the objects of reference (moon, sun,etc) are too far away to aku u feel the rotation. It is just like flying on a plane, U dont feel u are moving at 800mph, do you?
444020
Good question! I think no because everything moves within the atmosphere. Such as 8 hour long airplanes. If they travel the opposite direction of the earth's rotation, it wouldn't just stay still over the same exact spot over the ocean if it traveled 1000mph. good question, but that's what i predict using prior knowledge. Plus, i think it's gravitational force that makes every object move at the same time along with the earth itself. It may have to do with Earth's magnetic field, i don't know.
805592
first: by world, do you mean earth? \nIf so, think about all things spinning, are they not always more or less round or oval shaped? Actually so is the earth. \nOn the other way,I think that by spinning, a lot of things get that shape. Especially as like the stars and planets, they tend not to be in a fully finish state. Ok, that is my answer but I am no astronom only a nurse... MC
739091
because the earth rotates on an axis
283486
to imagine it, it would be very difficult. I suggest you experiment on it. Try using 3 ball, one for the sun, one for the earth, and another for the moon. Now do hte things you think. \nBut for me, the earth spins on its axis east to west and revolves the sun at east to west direction. EWhile the moon also revolves the earth at an east to west direction.
195652
the earth is a oblate spheroid....we do not fall to the edges because of the gravitational pull...
153242
Yes and No.\n\nYes, the Coriolis effect is real, but is extreamly weak and does not influence us on an everyday basis.\n\nThe Earth's rotation does effect to a very minor degree the direction in which water will drain, the farther away from the equater you are, the more influencial the force it.  However, the Coriolis effect is negligible in everyday life compared to other influences such as any other disturbances in the water, wind, ....
959085
the rotation of the earth and the semisic activity
199932
The earth's rotation.
9991
To a first-order approximation the Earth is round.  This\nis due to gravity.  Gravity pulls with equal strength in all\ndirections; therefore any variations from a spherical\nshape will lead to gravitational forces that\nbring the shape back into that of a sphere.\n \nThis is without considering the rotation of the earth,\nhowever.  The rotation of the earth adds centrifugal\neffects, which cause the earth to bulge slightly at\nits equator and flatten slightly at its poles.\n(This is like twirling a rock on the end of a string\nand then letting go--the rock flies away from the\ntwirler.)  Because of these centrifugal effects, the\ndistance from the center of the earth to the surface\nof the earth is about 0.33% shorter at the poles\ncompared to the equator.
364074
It's not so much that it's the time for the Earth to rotate as that is pretty constant, but that somebody somewhere (probably something to do with how many times a monk needed to pray each day) split the day into equal parts.\n\nThere are actually many hypohesis, the number of bones in your fingers, using the thumb as a pointing device, factors of 360 degrees.\n\nThere was actually a move to go decimal a number of years ago, 10 hours a day, each hour with 100 mins and 100 seconds
715799
Just over 1000 miles per hour at the equator.\n\nYou don't feel it because it's constant.  When you're in a car, or an airplane, and you're running steady, you don't feel the speed.  Relative to your position, it doesn't change.  \n\nNow, if someone put the brakes on the rotation, things would go flying (but be held in place by gravity).\n\n\nEDIT:  Amy,  your answer is too spooky to mine!
373975
The Earth is not a perfect sphere so you are at different distances from the centre at different places.\nThe density of the Earth is not constant so above dense rocks you appear slightly heavier.\nThe Earth spins so at the equator you are lifted slightly by the Eotovos effect.
864302
I'll assume it is your typical physics problem, which states some highly simplified conditions to demonstrate some physics principal and not a real engineering or natural science problem. We will assume the Earth increases its radius by 30 meters without any change in total mass, and that the Earth is a sphere of uniform density. In that case, the rotation rate would be proportional to the change in the moment of inertia of the Earth, I. For a uniform sphere I=2/5MR^2. You need to calculate the existing I and the new I after the radius change. Since M does not change, and we want only the ratio of the two Is, we can ignore the 2/5M and just compare radius. The radius of the Earth is about 6,370km or 6,370,000 meters. Adding  30 meters makes it 6,370,030 meters and the ratio of 6,730,030^2/6,730,000^2 is about 1.00001. That is about a 0.001% change, and about 0.001% of 24 hours is about 0.8 seconds. \n\nAs an angular momentum problem it is neat, but as a real life Earth problem it is totally bogus. There are all sorts of complications, like the sea only covers 70% of the Earth, the density of water is less than the average density of the Earth, the ice that melted started out far above sea level in many cases, and so on.
1064813
every one is wrong except one guy it cuz of centriptal force if u want to get in detail here it is   consider earth rotating along its axis gravity is acting along centre any force acting  opposite to it will reduse its effect   take a body on equator as earth is rotating body will have a force acting opposite to tat of gravity it is same as on feel in car when it is taking turn out side right  but when body is at pole it wont have tat force cuz pole is on the axis imagine whole situation  magnetic force wont have ny effect
1157171
As Debster92 pointed out, there is no way to stop the Earth from spinning once it starts.\n\nAlso, and perhaps more importantly, there is absolutely no way to get it started again if it did stop.\n\nThe angular momentum imparted on the solar system as it coalesced out the primordial gas cloud is what causes all the planets to spin and rotate as they do today.  If one were to somehow stop a body from rotating, it would take tremendous energy to get it started again.
254661
It's called gravitational friction.  It's causing the earth's rotation to slow down.  The second link has a cool graph showing how much earth's rotation has changed, not just due to the moon.  According to that link it will take billions of years for a day to last twice as long.  So don't expect one side of the earth to get stuck facing the moon before our sun burns out.  The third link says earth is spinning 1/3 slower now than it was 900 million years ago.