All Questions
17
questions
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Has a heavier atmosphere and the relocation of oil around the Earth had a measurable effect on the rotation of the Earth?
I am wondering if the man-made carbon emissions put in the Earth's atmosphere over the past 100+ years, and also the relocation of oil around the Earth over this same time period, has had any ...
- 478
0
votes
2
answers
66
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Can I argue that the Earth's surface is an inertial reference to explain why we can't feel it's rotation? [duplicate]
Passengers on a plane cannot feel the plane move when it's at cruise speed. Can the same reasoning be extended to earth's rotation to explain why we cannot feel it rotate even though it's rotating at ...
1
vote
1
answer
81
views
What's responsible for the earth to rotate and for the objects on it to rotate with it? [duplicate]
Three questions arose to me:
The first is what is responsible for the earth spinning? Is this just newton's first law in action - having been formed out of the material in the cluster of clouds after ...
- 111
1
vote
4
answers
516
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Can we stop the Earth from spinning?
When we walk on the ground, we push the ground backward and hence the ground pushes us forward and we change our position. The effect of our force on the Earth is very minute (literally negligible) ...
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votes
3
answers
42
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Could traffic acceleration/deceleration change the rotation of Earth? [duplicate]
For example at a stop light where multiple cars and trucks are accelerating at the same time all the torque from all the vehicles.
-1
votes
3
answers
947
views
Confusion about angular momentum of earth-moon system
My assumed definition of angular momentum is the sum over $i$ of $L_i =r_i\times{\omega_i}\times{r_i}$ for each particle about some origin.
We have two spheres rotating about the centre of orbit. For ...
user86425
2
votes
1
answer
102
views
How much does NASCAR affect the rotation of the Earth? [duplicate]
Many of us will be familiar with XKCD 162: Angular Momentum, in which someone spins counterclockwise to slow down the rotation of the earth and make the night longer.
The mass of an individual human ...
- 133
0
votes
2
answers
87
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Would the length of the day change if everybody in Britain switched to driving on the right?
I found this question on the internet and I feel curious about it. I assume that even if the direction were to be switched, it would not matter because the people driving from east to west and vice-...
- 175
1
vote
1
answer
670
views
Does Earth rotate around its geometrical axis OR the center of mass of Earth-Moon system?
I just came to know about barycentre. What exactly is this?
- 49
2
votes
2
answers
7k
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What happens if the Earth's rotation slows down? [closed]
Instantaneous stop
I've seen a few posts about what happens if the Earth stopped moving completely. Most seem to assume a scenario in which the Earth stops rapidly. In such scenarios, I have read ...
- 133
39
votes
7
answers
14k
views
Why don't we feel the subtle speed change of Earth's elliptical orbit?
Earth's orbit is a slight ellipse, so to conserve momentum its speed increases when it is closest to the Sun. If the speed changes there is an acceleration. If there is an acceleration there is a ...
- 2,878
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2
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227
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What factors will make Earth re-rotate again if it stopped? [closed]
"What will happen if Earth stopped rotating?" have been answered multiple times with a lot of informative and interesting answers. Continuing this hypothetical question, I have another one in mind.
...
- 131
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1
answer
204
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if the Earth's rotation was slowed down, would it naturally speed back up as it was before? [closed]
Fact: The Earth is rotating on it's own axis every 24 hours.
Question: If, for some reason I won't specify the current speed of the Earth and could slow it down(say by 5%). Will it speed up again ...
40
votes
6
answers
9k
views
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
8
votes
4
answers
12k
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Effect on length of day as the polar ice caps melt
If the polar ice caps of the Earth melt, how will the length of the day be affected?
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