Tagged Questions
0
votes
2answers
32 views
Expected behavior of the gravity under some experiment [duplicate]
I would like to know the expected behavior of the Gravity under the following mentioned imaginary experiment:
What if we dig a well or a boar or a straight hole (say, its diameter is 100 meter) ...
3
votes
2answers
66 views
Saturn's polar versus equatorial gravity
Wikipedia's reference for Saturn's gravity gives $10.44 m/s^2$ at the equator, but this conflicts with Britannica, which gives $8.96 m/s^2$ at the equator and $12.14 m/s^2$ at the poles. All values ...
0
votes
0answers
20 views
Some basic questions about electric field & nucleus [duplicate]
I am not good in physics.You can say I am beginner in this field.
I have some basic questions.
I ju st want to know that
[1] If there is repulsive force between same charges proton-proton then why ...
2
votes
3answers
107 views
What is the relationship between the radius of a ring in a rotating space station and the strength of the artificial gravity generated?
Suppose engineers built a rotating space station similar to Space Station V from the film 2011: A Space Odyssey, but with multiple concentric rings where astronauts can live.
...
0
votes
2answers
665 views
If the earth would stop spinning, what would happen?
What would happen if the earth would stop spinning? How much heavier would we be? I mean absolutely stop spinning. How much does the centrifugal force affect us?
If you give technical answers (please ...
1
vote
1answer
60 views
What will be the shape states of water in a centrifuge in 0G
Consider the concept of these videos http://www.youtube.com/watch?v=Zip9ft1PgV0&sns=em and http://www.youtube.com/watch?v=cUhgKFV5Ri4&sns=em but set in a zero gravity environment and in a ...
0
votes
0answers
53 views
Concave Sphere Habitat characteristics
I'm writing a short story set in an artificial planet-sized sphere with an ecosystem in its inner surface, whose "gravity" is created through spinning.
Energy sources aside, what other interesting ...
4
votes
4answers
643 views
Increasing mass' effect on the balance between centripetal force and centrifugal force
Okay, this is nothing more than a thought experiment which popped into my head while driving home from work today.
Take the case of a single body orbiting another, larger body, as in a planet and a ...
1
vote
1answer
233 views
centrifugal force in static frame of reference
The other day we derived Kepler's third law.
$$
\left( \frac{T_1}{T_2} \right)^2 = \left( \frac{r_1}{r_2} \right) ^3
$$
In order to derive this, you can look at a given planet that revolves around ...
0
votes
0answers
53 views
If Earth Were Filled with a Compressible Fluid and Spun Really Fast, What Hollow Would Form? [duplicate]
Possible Duplicate:
What nonlinear deformations will a fast rotating planet exhibit?
This is really a basic physics question that I wanted to check myself on because I'm not entirely sure ...
0
votes
1answer
114 views
calculating ballast needed to offset wobble of a 1g unbalanced centerfuge spinning at 20000G's
So this seemed pretty straight forward at first, but then I wasnt too sure about gravity forces...
So.
centerfuge
2 samples
1 sample is 1gram heavier than the other
centerfuge at top speed is ...
0
votes
2answers
731 views
Negative g-force: difference between gravity and centrifugal force?
I was having a discussion with a friend about human tolerances of g-force. He believed that the maximum human tolerance of negative g-force is low, in the order of .5 g. I countered, saying that ...
4
votes
3answers
332 views
Why don't astronauts in orbit get stuck to the “ceiling”?
When a shuttle is in orbit, it is essentially rotating around the "centre" of the Earth at a great speed. So why does there seem to be no centrifugal force sticking them to the 'ceiling' of the ...
22
votes
2answers
2k views
Why can't we feel the Earth turning?
The Earth turns with a very high velocity, around its own axis and around the Sun.
So why can't we feel that it's turning, but we can still feel earthquake.
3
votes
2answers
852 views
“Artificial gravity” on a rotating space stations
There have been a lot of sci-fi shows recently using the "rotating space station" explanation for gravity on space stations.
After watching these videos:
...
