All Questions
Tagged with relative-motion earth
25
questions
3
votes
1
answer
159
views
CMB dipole anisotropy maping to earth visualization
I do not see how this dipole anisotropy is due to the motion of the earth (and thus a doppler effect). Does anyone have a visualization of how this maps onto the earth and the motion of the earth such ...
- 460
0
votes
3
answers
1k
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Does Coriolis effect change the direction of an object moving parallel to equator, say along the tropic of Cancer?
It is usually said that the Coriolis force deflects a horizontally moving object to its right in the northern hemisphere and to the left in the southern hemisphere, and an object at the equator will ...
- 337
2
votes
2
answers
127
views
Can we prove the Earth rotation with a disk mounted in its center on a frictionless axis?
Can somebody prove the rotation of Earth if it places an uniform disk with a hole in its the center on an axis and orient it paralelly to Sun ecliptical disk?Just assure himself that the disk on the ...
- 2,255
3
votes
2
answers
60
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Why don't hovercrafts move West relative to the Earth [duplicate]
Suppose that there is a hovercraft floating a few centimetres above the Earth's surface. As it is disconnected from the Earth, which is spinning from West to East, shouldn't it appear to move East to ...
- 363
2
votes
4
answers
3k
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Why does hot air balloon rotate with the earth?
This might be a silly question but I have been wondering this for quite a while.
When a hot air balloon is flying in the sky, the earth is rotating at the speed of 1000 mph. Why does it move along ...
- 131
2
votes
1
answer
116
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Why ball fall at same location from where we throw it? [duplicate]
I have a silly question. As we all know earth is rotates at a speed of 460 m per sec. So if I throw a ball in the air for 10 sec than the ball must fall 4600 m away from me but these does not happen ...
- 21
-1
votes
2
answers
2k
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Does a helicopter that simply hovers remain in the same spot on earth? [duplicate]
Ignoring statistical variation in wind, will a helicopter that only applies force perpendicular to a perfectly sphere earth remain in the exact same spot relative to the earth?
I am arguing with ...
- 19
0
votes
0
answers
30
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Vertically move in a helicopter to go somewhere on Earth [duplicate]
Is it possible to go from point A to point B (which are on same latitude) by hovering above A and wait till the earth rotates to point B below and then come down vertically?
I believe there would be ...
- 1
3
votes
2
answers
720
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Is one side of earth faster at night and slower at daytime?
I'm reading Physics for Entertainment by Yakov Perelman and in it he says under "When we move around the sun faster" that at midnight the speed of the rotation of the earth is added to that of earth's ...
1
vote
4
answers
209
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Question about spinning Earth
The earth spins on its axis at 1674 km/h from west to east. Would it not imply that an airplane flying eastbound at 500 km/h would cover a distance of 500 kilometres in an hour while another plane ...
Saurav
-1
votes
1
answer
36
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Revolution of the Earth [duplicate]
Good day, it seems easy but I still find it difficult to understand why we return to the same spot when we jump despite the Earth revolving beneath us. Can someone explain?
0
votes
2
answers
451
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Earth's rotation and a helicopter [duplicate]
Imagine a helicopter that took off from point A on the ground and goes vertically in the air to a certain fixed point B in the atmospheric area at a certain fixed altitude with enough fuel to stay ...
-2
votes
1
answer
99
views
Motion of earth wrt. objects?
To "outrace the Sun" (or rather the earth) in Arctic latitudes, one
can go much more slowly. Above Novaya Zemlya, on the 77th parallel, a
plane doing about 450 km. p.h. would cover as much as a ...
- 1
1
vote
1
answer
1k
views
Does aeroplane moving against Earth's rotation cause relative wind (assuming otherwise a quiet weather outside)?
Although, I know some answers, I need more affirmative and accurate answers.
Why is the journey time from London to Singapore less compared to Singapore to London? Is it because of Earth's rotation ...
- 13
2
votes
3
answers
8k
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How high do you need to be so as to not rotate along with Earth?
So, I saw this meme about some minister commenting that the Earth doesn't rotate, for if it did then planes only need to be in the air and the destination city would come to it. I know this is absurd ...
- 262
0
votes
1
answer
111
views
Can an object take off from A, do not move (in the air) but land at a different place? [closed]
Can an object take off at a point A on the surface of the Earth and then land after some time only to land at a different place where it initially took off (because in the mean time the Earth has ...
4
votes
6
answers
6k
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Air flight and Earth's rotation
I read a response asking why flights of equal distance east and west take roughly the same time (disregarding wind actions). I have trouble visualizing part of the answer; "the speed of the rotation ...
- 53
2
votes
0
answers
75
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Faster alternative to travel to any location in the west? [closed]
Suppose one needs to travel to Somalia from Indonesia(which are approximately at a distance of $4000$ miles from each other on the line of equator). To accomplish this task, I suggest the following ...
- 143
0
votes
1
answer
642
views
Does Earth get gravity due to it's spinning? [duplicate]
Consider my example below.
Example: 1. A man standing on grass(point) on earth surface.
2. He jumped.
3. And returned back, and he could find the same grass(point) under his foots. Right?
If earth is ...
- 13
0
votes
1
answer
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
0
votes
1
answer
146
views
Earth's direction in space [closed]
After watching videos about the rotation of the planets being helical and not heliocentric, I wondered, as Earth travels through space, which part of Earth is the forefront?
- 11
5
votes
7
answers
26k
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The Earth is spinning, so why don't we jump and land on a different location?
I know there are similar questions on StackExchange but I think it is different and detailed.
The earth is spinning 465 meters/second so why don't we jump and land on a different location?
I googled ...
- 167
0
votes
4
answers
211
views
Revolution of Earth [duplicate]
If all motion is relative, how do we know that the Earth revolves around the sun?
Or we are just making the above statement from the frame of reference in which Sun is at the origin?
- 557
1
vote
2
answers
269
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Moon and the moving train
While travelling by train (travelling West to East), it seems the moon is moving in opposite direction when seen from the window, but then it reverses its direction, after a certain amount of time and ...
16
votes
6
answers
53k
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How fast is Earth moving through the universe?
As the galaxy is moving and the solar system orbiting the galaxy and the Earth orbiting the sun. So how fast is each object moving and what is the fastest we move at?
Do we even know how fast the ...
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