Centrifugal force Definition and 204 Threads

Can someone explain me what is the connetion between centrifugal force and weight force thanks ? In which situation should I use the centrifugal force (that is a fake force) ?

centrifugal force apply force to spring while it spinning, how to calculate it's compression. there is no any attached mass on spring. just centrifugal force depends on RPM. weight of spring is important, centrifugal force is changing by radius, so it's not uniform.

Homework Statement Consider a spring of natural length L_0 with constant k which rests on a horizontal frictionless surface. The spring is attached at one end to a fixed post and at the other end to a mass m. Suppose the spring is rotating around the post in a circle with angular velocity w...

Homework Statement [/B]there's an image of the situationHomework Equations [/B]F= mω^2 RThe Attempt at a Solution [/B]so, in the image there are two spheres that exerts a tension on the string using their centrifugal, since the centrifugal bodies are two I expect that the tension is the sum...

Hey guys, So I had what I thought was a cool simple idea to show the effects of the apparent centrifical force. I glued the mouth of a balloon onto the end of a 1.5m length of a 10mm flexible tube. The idea in my head was that by spinning it around the inertial forces would result in effective...

While balancing rotating mass we consider the inertia force (centrifugal force) is equal and opposite to centripetal force which causes the rotation. if both force(applied external force on rotating mass) which causes the motion and force which resist motion (inertia force) are equal and...

Homework Statement an object is sliding on an elliptical hill shown in picture. what is the direction of (inertial) centrifugal force at each moment? Homework Equations F=mv^2/r The Attempt at a Solution I think it should be towards the center of ellipse and value of r in the formula varies...

Hi, I've been considering the design of a fan that sucks air radially and blows axially to resolve a technical problem of a machine. I've looked around for the equations governing the air particles and the angle of the radial blades (angle between a flat blade and a radial line) of the fans, but...

I was wondering if someone could help dissect my understanding of Centrifugal force and explain any errors in my logic. So imagining that I am driving a car and making a right turn. I make the right turn and am forced into the side of the door. I feel a force acting on me but after I make my...

Homework Statement Horizontal plate is rolling around its horizontal axis. On the plate few meters away from this axis there is a jar with a burning candle inside Homework Equations Where would go the candlelight/flame , i mean which side would it turn and why The Attempt at a Solution I...

As a result of various searches on the Net, I have ended up here on this fantastic site. Specifically, it was an old 2008 thread in which was closed, so in order for me to expand on such discussion I've decided to make my own thread; by which I will go a slightly different direction with...

Dear Experts, I believe that we use the concept of Pseudo Forces, to analyze mechanics within an accelerating frame of reference. Pseudo force seems to be a 'correction' in acceleration provided to all the points that are not riveted to the accelerating frame of reference. And centrifugal force...

A lab mate and I got into a discussion on how to properly balance a swing bucket rotor. This is different than a normal centrifuge in that there are buckets that swing out once spinning begins. In a standard centrifuge balancing is simple - it's just the same weight directly opposite your...

Is it 'possible' (that is, if you say not, can you conclusively show the negative), that the entire observed acceleration in the expansion Our Universe, created some 13.7 x 10^9 years ago in the Big Bang, is due solely to centripetal force throughout, caused by a complex...

If the walls of a submarine were supported by fast-spinning rings, using centrifugal force to prevent collapse or buckling, would this be viable engineering? I am assuming that the rings would be magnetically suspended to eliminate friction. This also seems like a self-stabilizing system with...

PeterDonis submitted a new PF Insights post Centrifugal Force Reversal Near A Black Hole Continue reading the Original PF Insights Post.

I know that the centripetal force is the resultant force which points to the center. So in the case of a washing machine, what force pushes the clothes and water to the outer edge? There is not centrifugal force, but then how come all the clothes appear to get pushed to the circumference of the...

So I was doing a research paper on the differences of gravity at various places on the Earth, and I found a few sites and videos that tried to explain that a centrifugal force caused by the Earth's rotation was a cause for the disparity in gravitational acceleration at various places on the...

As the potter shapes the mud vessel on his wheel, the wheel applies centrifugal force on the clay.So against this centrifugal force the potter shapes the vessel. Could this be an example of centrifugal force?

Is anyone interested in telling me the force created from 2 propeller blades rotating 2000 rpm.The total diameter of the prop is 72 inches and the weight of 1 blade is 4 lbs. Reason for the question is I want to mill a clark-y profile the length of the blade less ,4 inches for a bolted...

First, may I apologize in advance if this question is in the wrong section of the forums. Given a cloud of mixed gasses and rocky material, how is spin created when a star is born? I will also give the cloud of gas a random order of movement prior to star formation. Can the physics for the...

Hi everyone, this is my first thread i hope i do it right. I will get right into it by saying, how can i prove that : w=w0*(1±4πƒv/g) Where "w" is the weight of an object moving along the ecuador, v is it's velocity and g is the gravitational acceleration. I have...

Is there any centrifugal force acting on fine particles suspended in water inside centrifuge tubes? explain, not only by textual discussion

HI. I've read a lot of posts on centrifugal and centripetal force in space. But they mostly refer to the spinning space stations. I would like to know what happens when you take a motor with an axle and a mass on the end on of the axle, and you start the motor up.. I understand the whole law...

We know that the Earth is rotating, and its gravitational force is the centripetal force. So if I'm standing on the Earth, I'll feel 3 forces: Gravitational force, normal force and centrifugal force. However, the magnitude of the centrifugal force is equal to the gravitational force, so wouldn't...

SPOILER ALERT: This question will refer to, and may have spoilers, regarding Arthur C Clarke's Rendezvous with Rama. Read below at your own peril. BTW the book is totally worth reading. In the book, the astronauts basically encounter an immensely large cylinder, rotating along its long axis...

Hi, I am kind of confused about how a centrifugal force works. Every where i search there seems to be 2 opinions, that centrifugal force is indeed a force and others that argue that it is not. What I want to understand is in (for example) a centrifuge, which rotates very quickly with a test...

My understanding is that so-called 'centrifugal force' is a fictitious force, i.e. from the reference frame of an outside (inertial) observer, there is only an inward, centripetal force on a body being accelerated in uniform circular motion, but from the reference frame of that body, objects...

When an object, orbiting in circular path, experiences the sensation of being thrown outward away from the of circle. We often think that an outward force or centrifugal force is responsible for this trend. But it is wrong idea. Inertia is responsible for this. Since Earth rotates around its...

How exactly does the centrifugal force work? What causes it? Why is it considered a fictous force?

what is the cause of the centrifugal force from the perspective of the rotating observer? Also is rotation relative like linear motion?

Hi Is someone interested in this topic ? I'd like to share my idea with you, PF people. I also designed a "reverse geometry" to illustrate this paradoxical effect. Thank you for your answer Jean-Marc

Definition/Summary A non-inertial observer measures the same "real" (physical) forces as an inertial observer does, but if he wants to apply the inertial laws of motion, he must add "fictitious" (non-physical) forces. One of these "fictitious" forces is a position-dependent centrifugal...

Hey all, I recently read a bit about proposals to induce "artificial gravity" on a Mars mission by spinning two sections of a spacecraft on a long cable in order to create a centrifugal force that would simulate gravity by pulling astronauts outward toward the floor of their capsule, or...

Homework Statement This is not homework. Suppose I am rotating a ball on a string (m=1, r = .2, v = 10 m/s) Homework Equations Fc = (m) v2/r = 500 N*m If I reduce the length of the string to .1, v becomes 20, so Fc = 4000 N*m what is the work I have done, what kind of integration do...

I'm trying to understand why a superdeformed nucleus may be represented as bulging perpendicular to the axis of rotation, and I'm guessing this is akin to why the Earth does so too. I've gone through secondary school and 3 years of University to have professors/teachers snigger every time they...

Two coins are on a turntable that steadily speeds up, starting from rest, with a ccw rotation. Which coin flies off the turntable first? Coin 2 is further away than coin 1. MY ATTEMPT: I believe centrifugal acceleration is done by friction. So fs=us*m*g. Fc=mv^2/r. Then...

Centrifugal Force -- continue spinning indefinately in space? I believe it is correct that if you spin up an object in space, like a space ship, it will continue spinning indefinately unless/until another force is applied to stop it from spinning. Then centrifugal force would push the objects...

We all know that the Centrifugal force is not a real force.However,we can use it mathematically. This Wikipedia Article on Centrifugal force States that: But, According to Newton's first law,objects tend to move in a straight line or stay at rest at a constant velocity unless no external...

According to the wikipedia page, when given an angular velocity, centrifugal force increases with radius. I always thought the larger the radius, the smaller the centrifugal force. I think I'm misunderstanding some term here (possibly "angular velocity"). Can someone please explain?

Maybe I need to take a little break from my studies but I'm not getting this at all. At the risk of looking really dumb, here's what I need help with; Imagine that you are living in a rotating space habitat. The habitat has a diameter and a rotational speed such that at the outer edge you...

I've got a weekly physics assignment, and I've been racking my brain on it. Any input on the accuracy of my response, what I could do to improve it, and where I may have gone wrong? Homework Statement Some years ago, a newspaper story contained the following statement" "The space shuttle...

Hello! I have some doubts regarding centrifugal force.. Imagine yourself in a car which is taking a sharp turn. You tend to fall to the other side ( if the car door is open you'd fall out of the car) Is this because of inertia which opposes the sudden change in motion or is it because of...

I am not sure I get the concept of centrifugal force.. If we have a stone tied to a thread and we just spin it in a circle, and while we are spinning it in a circle, the thread breaks and the stone flies off tangentially. If we watch this motion from an inertial frame, which force will be...

My grade 11 textbook never mentioned about inertial frame, non- inertial frame, rotating frame of reference and so son.The derivation of centripetal acceleration was very intuitive.This derivation was given after Laws of Inertia and other Newton's laws of motion.Ideas like cross product and dot...

The centrifugal force is $$ \Omega\times r\times \Omega $$ I paper I am reading then writes it as ##\frac{1}{2}(r\Omega)^2 - \frac{1}{2}\Omega^2r^2## How was this obtained? Using the fact that ##a\times b\times c = (ac)b - (ab)c##, I don't get what they are getting so there is...

Hi, I have this problem that I'm trying to solve and it has been a few years since I've taken Physics. I want to know how you would approach and solve this problem, and what equations you would use. Hopefully somebody here can help me out. The Problem: A vehicle is on a road that is V inches...

Hi, i have a curve g:[0,t]->IR² with g(t)=(x(t),y(t)) in a homogenous gravitational field and i want to look at a ball rolling down this curve. therefore i want to derive some equations in order to calculate the normal force and the centripetal force at each point of this curve in order to see...

First time poster, thanks for help I wonder if low tide is caused by centrifugal force at noon time and high tide at midnight? The centrifugal force pushes sea water toward the center of the Earth at day time, away from it at night time. So, a man weights more at day time than night time. Am...

Mod note: This thread on the reactive centrifugal force was split from this thread on the (fictitious) centrifugal force. It is really not that confusing if you make clear which reference frame you consider.