All Questions
Tagged with earth rotational-dynamics
15
questions
56
votes
8
answers
44k
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Proof that the Earth rotates?
What is the proof, without leaving the Earth, and involving only basic physics, that the earth rotates around its axis?
By basic physics I mean the physics that the early physicists must've used to ...
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8
votes
2
answers
4k
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Huge buildings affect Earth's rotation?
Does constructing huge buildings affect the rotation of the Earth, similar to skater whose angular rotation increases when her arms are closed comparatively than open?
- 415
4
votes
2
answers
1k
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Can a Storm make the day longer/shorter?
I've read that changes in jet streams can affect the speed that the Earth rotates on its axis, thus making the day longer or shorter?
- 2,983
2
votes
2
answers
1k
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Does trade affect Earth's rotation? [duplicate]
Every country is trading with other countries around the world, some more than others. I was wondering if there would be any change to the Earth's rotation because of the imbalance of trade between ...
- 39
2
votes
2
answers
1k
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Why does the Earth rotate on its axis?
I know that the earth moves around the sun because of the gravity force, because the spacetime around the sun is curved.
But why does the earth rotate on its axis, and which parameters can affect ...
- 2,983
7
votes
2
answers
2k
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Can we get energy from the Earth's rotation?
Is there any way to harvest large amounts of energy from the Earth's rotation?
- 4,576
2
votes
2
answers
703
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Does Acceleration due to Gravity take into consideration the centrifugal acceleration due to Earth's spin?
Is the gravitational acceleration we consider only the attraction due to the Earth's gravity or is it that of gravity plus the attraction due to Earth spinning?
We know that earth produces an ...
- 57
1
vote
1
answer
386
views
Earth is rotating [duplicate]
Possible Duplicate:
Why does the atmosphere rotate along with the earth?
If i take off from land on a helicopter straight above the earth surface to a certain height and stay there for few mins/hours ...
- 13
40
votes
6
answers
9k
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How can the Earth keep spinning with a liquid core?
In regards to the 'conservation of angular momentum' being the explanation of why celestial objects spin...
If you fill a ball or any other container with a liquid and try to spin it, you will not ...
- 409
21
votes
3
answers
11k
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How quickly was the Earth rotating 250 million years ago?
The Earth is slowing at a rate of $4.7\times10^{-4}$ miles per second every 100 years due to tidal forces of the moon.
See:
http://en.wikipedia.org/wiki/Earth%27s_rotation
http://imagine.gsfc.nasa....
- 311
4
votes
2
answers
2k
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How do I experience Earth's movement?
We are told that Earth is spinning on its axis at 1037 mph— something that we don't usually feel because of the environment that moves with us as well. Is there any experiment with which we can know ...
- 159
3
votes
1
answer
152
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Why is the slowest point of Earth's rotation in the middle of the year?
The following image is taken from Wikipedia's article on the leap second.
Why is the slowest point each year in the middle of the year around July? Does being further from the Sun cause the Earth's ...
- 870
2
votes
3
answers
297
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Is it possible to estimate the 23.5° tilt of Earth's axis?
Using the value of the precession of Earth's axis in 25,800 years and the value of Earth's radius, mass, moment of inertia etc., would it be possible to calculate/estimate that Earth's axis must be ...
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0
votes
1
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2k
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Since Earth spins, would an aircraft travelling opposite to direction of Earth spin take less time? [duplicate]
Suppose we want to reach the point on earth which in relative terms is exactly on the opposite end of the sphere we call earth (I know it is not an exact sphere).
We either dig vertically downwards, ...
- 407
-1
votes
2
answers
2k
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Why do we say that the torque on Earth due to Sun is zero?
Let's assume, the mass of Earth = $M$, the radius of Earth = $r$, the moment of inertia due to revolution of Earth = $I$, angular momentum due to the revolution = $L$, distance between the center of ...
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