The centrifugal-force tag has no wiki summary.
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Centripetal Force Acceleration
Suppose you want to perform a uniform circular motion . Then a body performing uniform circular motion horizontally needs an acceleration $= \frac{v^2}{r}$ at each point on the circular path with ...
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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 ...
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1answer
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Earth's rotation isn't that orbit?
If the earth is rotating at some $465~\text{m}/\text{s}$ at the equator and that's really fast.
Shouldn't we in that case be in orbit with the earth just not fast enough?
How fast do we need to ...
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Circular motion and centrifugal force
Assuming a race car drives around in a circle of radius r, center (0,0), linear velocity v, and ignoring centrifugal forces and friction I can calculate the position at any time, t.
Angular velocity
...
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Fictitious forces confusion
I have a hard time understanding the subject of fictitious forces. Let's discuss a few examples:
1) I'm sitting inside a vehicle which is accelerating in a straight line. I feel like someone is ...
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MotoGP motorcycles lift front wheel while exiting curve
I've seen multiple times now in MotoGP that motorcycles were leaving a curve, and because of the acceleration the front wheel is slightly leaving the ground. But at the same time they were still ...
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How is space ship's acceleration perceived if the acceleration is perpendicular to the velocity?
Spacecraft in orbit around the Earth are constantly accelerated by the gravitational field of Earth. That's why the spacecraft ($m \ll M$) is in an (elliptical) orbit around the centre of gravity of ...
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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.
...
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Will two trains running along the equator in opposite direction experience same wear out?
Two identical trains, at the equator start travelling round the world in opposite directions. They start together, run at the same speed and are on different tracks. Which train will wear out its ...
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1answer
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Can structural trusses in centrifuges be helpful at all?
Imagine a rotating space station for the purpose of creating artificial gravity. Generally, such a space station is portrayed as a ring or a cylinder. Images of these space stations often have lines ...
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1answer
289 views
Turning an airplane - coordinated turn and inclinometer (“the ball”)
I'm flying, turning in a stable orbit, i.e. at constant level with a constant angle of bank, at constant airspeed, with a constant radius of turn, as in the picture here (sorry it's my first post, ...
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Centrifugal Force and Polar Coordinates
In Classical Mechanics, both Goldstein and Taylor (authors of different books with the same title) talk about the centrifugal force term when solving the Euler-Lagrange equation for the two body ...
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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 ...
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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 ...
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Fictitious Forces $\overset{?}{⇔}$ Constraint Forces (re: D'Alembert's Principle)
Are fictitious forces and constraint forces the same thing?
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Vertical Loop like Anti-gravity
Let's take a bottle (no cap) with half its volume filled with water. If we rotate the bottle at some slower average velocity, water does not drop out of it. The same principle works on Roller ...
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1answer
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Condition for circular orbit
I am a little confused about the condition for circular orbit. Goldstein's Classical Mechanics has the condition for circular orbit as $$f^'=0\tag1$$ where $f^'$ is the effective force. I understand ...
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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 ...
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Rotation in an 'empty' universe [duplicate]
Possible Duplicate:
Is rotational motion relative to space?
Assume a universe with the same physics as ours, but containing only one rotating (charge-free) body - let's say the size of the ...
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1answer
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Would we feel the rotation of a rotating habitat?
Assume that a space habitat is shaped like a can with the "top" open.
lets say we attach the can's top to a string with an astronaut standing on the base. We then rotate the can in deep space using ...
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Centripetal/Gravitational Force
Suppose a satellite is orbiting the Earth. The gravitational and centripetal force supposedly point towards the Earth. Therefore, the net force is towards the Earth. Since the satellite doesn't fall ...
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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 ...
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Shape of rotating rope (lasso problem?)
Let's take a wire or a rope. I usually do this with a chain or my scarf.
I fixate one end in my hand and apply rotation (by subtle movements of this endpoint like spinning a lasso). The rope gets ...
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Why did they add a Centripetal Force in the Free-Body Diagram?
problem
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solution
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Why do they have the centripetal force in there? I understand that the normal force is the centripetal force here, but why would they say "or $\frac{mv^2}{r}$"? I thought it ...
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Imaginary angle on simple centrifugal problem
Say somebody is spinning a mass on a string with a period $T$ around. If $T$ is very big, the mass will describe a small circle around the person's waist. If $T$ is very small, the plane of movement ...
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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 ...
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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 ...
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1answer
109 views
Separation of solids from liquids using magnetic waves
Using magnetic forces, I want to separate solids from liquids in a solution as a centrifuge would do. Is there a way to hit a volume of liquid and get it to separate liquids and solids with heavy ...
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1answer
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Equation of Motion in a Non-Inertial (Rotating) Frame
Let me preface my question by informing you this is for an assignment, so I would rather not have explicit answers but rather be given guidance in arriving at the correct solution.
The question is ...
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1answer
183 views
calculating of g force in fun ride
we vistited yesterday a fun park and saw a ride which was a big centrifuge only in vertical.
this one had a speed meter but it was broken and i also wanted to know how much g-force is on there...
so ...
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1answer
108 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 ...
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2answers
708 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 ...
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Could a human run horizontally inside a Wall of Death?
A popular circus stunt is for a motorcycle rider to ride inside a bowl shaped depression called a "Wall of Death." The rider goes higher and higher up the wall until they are actually horizontal. I ...
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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 ...
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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.
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Artificial Gravity - Spinning Station Questions II
In an answer to Artificial Gravity - Spinning Station Questions Vintage wrote:
A theoretical space station of radius 900 meters, doing a complete rotation every 60 seconds (in order to generate ...
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Why don't we consider centrifugal force on a mass placed on earth?
Let us say a block of mass is placed on the surface of earth. Then while drawing the forces on that body, we say:
Force F = mg acting towards the center of earth
Normal reaction N offered by the ...
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Mixing a cup of tea and break of centrifugal force [duplicate]
Possible Duplicate:
Vortex in liquid collects particles in center
Why when you mix a cup of tea with a teaspoon, tea-craps collect in the center of cup, instead of goes near the walls?
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What is the maximum non-fatal force withstandable by a human being for a short period?
Assuming any (optimal) body orientation/position relative to the direction of force and mechanism of death.
I'd be interested in a rough estimate of threshold force and a suggested mechanism of ...
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How does centrifugal force work?
I know what centrifugal force is, but how does it work? Why are things forced to the outside?
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How many Gs would a driver of the Bugatti Veyron experience on the Ehra-Lessien track when cornering before record attempt?
Apologies if too specific.
Watched a documentary National Geographic Megafactories Bugatti Veyron
I told an colleague (engineer) about the need to warm the car up and then unleash it on the long ...
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Why is the Earth so fat?
I made a naive calculation of the height of Earth's equatorial bulge and found that it should be about 10km. The true height is about 20km. My question is: why is there this discrepancy?
The ...
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“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:
...
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Why is a suspended spinning body of liquid prolate?
Instead of a flat disc one would expect the centrifugal forces to push it in..
The body is not in a container but suspended in air spinning horizontally (i.e. left to right or vice-versa) - how to do ...
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1answer
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Can we measure the “Tilt-A-Whirl” effect of the Earth+Sun orbiting the galactic hub?
You've probably ridden on the fairground ride called the "Tilt-A-Whirl", or--as Disneyland calls it--the "Spinning Teacups", as well as other fairground rides that employ epicycles. You can really ...
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Calculation of the G-force
I have a formula which is $\text{G-force} = \frac{v\omega}{9.8}$, where $v$ is speed and $\omega$ is the angular velocity. I've seen on the internet that G-force is actually $\text{acceleration}/9.8$. ...
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Derivation of the centrifugal and coriolis force
I was wondering how easily these two pseudo-forces can be derived mathematically in order to exhibit a clear physical meaning.
How would you proceed?
