All Questions
33
questions
-6
votes
1
answer
52
views
Why sun revolve around the sun ? Why cant it just rotate ? ( gravitas attraction force makes it revolve , how?) [closed]
Why the revolution ?
How General relativity theory explains it
- 50.2k
2
votes
4
answers
2k
views
Change of direction of rotation with change of perspective
Take an apple. Rotate it around its vertical axis to the right (relative to you). If you look at it from above (your head above the apple) and take a point there while the apple is rotating, you will ...
- 1
4
votes
6
answers
6k
views
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 ...
0
votes
1
answer
61
views
Clear explanation of acceleration of the earth
The Earth rotates with an angular velocity of $\omega$.
My questions:
Is the angular acceleration of the Earth equal to $0$ because angular velocity is stable?
What is the difference between angular ...
- 6,372
5
votes
2
answers
3k
views
Why doesn't Foucault's pendulum show Earth's spin at the equator but works at the North/South poles
If you where directly above the North/South pole and set up Foucault's pendulum, why does it show the Earth's spin even though the Earth isn't spinning there? This is also where it takes the shortest ...
1
vote
0
answers
20
views
If the liquid internal parts of the Earth solidify, what will be the consequences?
Will the Earth's radius just decrease, the daytime decrease, and the magnetic field seize to exist?
7
votes
4
answers
2k
views
Will the sea form a concave surface?
Without neglecting the fact that the earth is rotating, let us be in a ship (such that there is no relative motion between sea and ship) in a sea that surrounds the northern most or southern most ...
- 1
-1
votes
4
answers
6k
views
Why does earth spin counter-clockwise?
If we observe the earth from the north pole, we can see that the earth is rotating counter clock wise direction. The earth spins due to angular momentum, but why only in counter clock wise.
Why ...
- 4,487
56
votes
8
answers
44k
views
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 ...
- 578
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 ...
- 21.4k
2
votes
1
answer
403
views
How big (in meters) could the difference be between ECI and ECEF coordinates at midnight UTC?
Is the only difference due to leap seconds, etc. or other differences between UTC and updated forms of universal time, such as UT1? In other words, are all earth-centered inertial (ECI) coordinate ...
- 41.6k
3
votes
1
answer
1k
views
Will an object dropped from a high building displace due to the Earth's rotation?
I read that in the 16th and 17th century, the question of whether the Earth rotates around its axis or all celestial bodies rotate around it was extensively debated. One of the anti-rotation arguments ...
- 21.4k
1
vote
1
answer
76
views
Earth rotation with atmosphere
Note: This might be a very dumb question
Considering Earth's rotation on its axis, I was thinking it made sense for the outer sides of the Earth to have a significantly higher tangential speed, ...
- 15.3k
3
votes
2
answers
1k
views
Can we calculate the frame dragging force of the Earth?
Although clearly this force would be significantly greater with a rotating black hole, is it still possible to calculate this drag for say a satellite orbiting the Earth?
- 480
-2
votes
2
answers
160
views
Day/Year Length Of Larger, but same mass, Earth? [closed]
I’m wondering how the length of a day and year would change on Earth if it was twice as big, but the same mass (less density)?
Also, would such a difference cause it to orbit closer or further from ...
- 11.9k