Questions tagged [centrifugal-force]

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Calculating the pressure in a rotating bucket [closed]

By the way, I am not quite convinced that the solution should be $\frac{1}{2}\rho\omega^2r^2$. I think it should be $\rho\omega^2r^2$. Appreciate any help.
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Centrifugal force in a non-inertial reference frame

There is something I don't quite undestand about the role the centrifugal term plays when describing motion in a non-inertial reference frame. In most Classical Mechanics books, you can find similar ...
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Why do we weigh less on equator when centrifugal force isn't a force at all? [duplicate]

Why would we weigh less on equator as the weighing machine measures the force by which we push ground and that should not change if are on equator or poles?
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Solar Oblateness: Understanding the force balance formula and solar radius in arcseconds

I have 2 questions regarding the following exam-style question and solution: Given a solar mass of $M_{\odot}=2.0 × 10^{30}\,$kg, a solar radius of $R_{\odot}=7.0 \times 10^8\,$m and a rotation ...
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Determine force of particle along trajectory [closed]

The problem: I have a trajectory in cartesian plane defined by points. A particle with mass $m$ runs through this trajectory, with a defined initial velocity. At every moment, there is a force $F$ ...
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What happens when one uses a blender in zero gravity?

I was recently told by a friend that using a blender type apparatus in a zero gravity environment will act like a centrifuge instead mixing properly. Is this the case? Furthermore, can anyone provide ...
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Baseball In an O'Neil Cylinder

I am trying to understand the physics of a baseball game in a rotating spacecraft such as the O'Neil cylinder seen in the movie Interstellar. Imagine a cylindrical spacecraft of radius $R$ rotating ...
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Roche lobes in binary star systems

While studying mass transfer in binary star systems, I came across the concept of Roche lobes and the role of the inner Lagrangian point $L_1$, as shown in the adjoining figure. However, I am having ...
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Why is Earth's gravity stronger at the poles?

Many sources state that the Earth's gravity is stronger at the poles than the equator for two reasons: The centrifugal "force" cancels out the gravitational force minimally, more so at the equator ...
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Clarification on circular motion and pseudo-forces [duplicate]

The way i interpret pseudo-forces is that its a mathematical correction that makes the conclusion of the observer in an accelerated frame correct. And I also believe that this "pseudo-force" has no ...
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Artificial gravity on free falling objects

Assume the following scenario: -two objects in constant velocity free fall side by side to each other (imagine two astronauts in orbit) -one of the two astronauts is inside a non rotating ring ...
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Centripetal and Centrifugal acceleration/force [duplicate]

Centripetal force acts towards the centre and necessary to keep an object in circular motion. But centrifugal force is equal to the magnitude of centripetal force and acts in outwards direction and ...
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Water in a glass on a rotating disc

You put a glass of water on a record turntable and begin slowly increasing the speed. What happens first - does the glass slide off, tip over, or does the water splash out. I am particularly ...
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Advisory speed limits on turns

I was just thinking about why many corners have advisory speed limits that are less than the highway speed limit, does it have to do with centripetal acceleration?
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If I kept a body in a groove on a frictionless circular table, and rotate the table with a constant angular velocity, what will happen to the block? [duplicate]

I have read that it would slide off the table, because apparently in the frame of the table it experiences a centrifugal force outwards, but I can't seem to agree with that logic. In the ground frame ...
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Is the force which throws a body on a rotating disk outwards centrifugal force?

If some object is kept in a radial groove made on a disk and the disk is rotated with say constant angular velocity. Now as we know that the object moves outwards ie away from the centre of the disk....
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Where do we see centrifugal acceleration?

A body in circular motion always possesses centripetal acceleration which is felt by a person sitting at the center of mass. It will not be felt by a person viewing the motion from the ground frame. ...
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Bicycles are also balanced by gyroscopic effects, right? [duplicate]

I think that the wheels of a bicycle are rotating when it is moving forward, so there must be gyroscopic effect, so the bicycle is balanced by gyroscopic effect to some extent, right?
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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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Can opposing centripetal forces help us play catch in a space station?

Let's say we are inside a wheel in our brand-new space station, which spins to simulate gravity, using the centrifugal force. We decide to celebrate our ground-breaking success by play catch in space. ...
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Pressure at depth $h$ of a spinning bucket at top of swing

This was a question posed to me some time ago and it has haunted me ever since. Hints and suggestions would be awesome. Say someone is spinning a bucket of water in a vertical circle of radius $r$ ...
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Potential for a general fictitious force?

In a general non inertial system four fictitious forces arise: Coriolis Force, centrifugal Force, azimuthal Force, "translational" Force (due to linear acceleration of the origin of the system) I ...
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Why $g$-force increase with radius and centrifugal force decreases? [duplicate]

Trying to understand the 2 formulas and the relations between radius. Common sense will tell me that centrifugal force increases while we are on a curve with a short angle , as newtons law formula ...
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Tension in horizontal circular motion of a non-uniform object (friction negligible)

A rod of total mass $M$ and length $x$ has its tip attached to a string of negligible mass, so it spins in a circular motion horizontally free from friction with constant tangential velocity. I have ...
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Is Upside-down Racing Possible?

Based on the calculations I have done, upside-down racing seems to be possible. But in my mind, and certainly others too, it seems outlandish and impossible. Here is what I have come up with, please ...
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Y the relation among centripetal, centrifugal and gravitational force exerred on the moon is different from an object on the earth surface?

I read that since the earth vid rotating on its axis ,an object on the earth surface experiences a centrifugal force because the object is also moving around the earth's axis.So,that centrifugal force ...
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Quantum mechanical origin of pseudo forces

I am thinking about this from quite some time but could not come up with any satisfactory explanation. In a nutshell, how would one explain the pseudo forces felt by non-inertial observers given that ...
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Is the Olympic running race fair? [closed]

I noticed that the 200-meter sprints are conducted on curved tracks. (See this video: world championship semifinals 2009) Isn't that weird? I mean, just look at the curvatures of each lane! (Source)...
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Why do we only feel the centrifugal force?

After spending some time researching about the centrifugal force, I now understand that it is needed in a non-inertial reference frame for Newton's Laws to hold true. However, I don't understand why ...
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What happens to net acceleration in a non-inertial reference frame with cenripetal force?

In a non-inertial reference frame, the centripetal force is balanced by a centrifugal force. Therefore, shouldn't the net acceleration be zero? Yet, you still feel an acceleration outwards? Why is ...
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Centrifugal force in effective potential [closed]

$$E = \frac { 1 } { 2 } m v _ { r } ^ { 2 } + \frac { L ^ { 2 } } { 2 m r ^ { 2 } } + U ( r ).$$ This is the formula of total energy of an object with mass $m$ orbiting an assumed stationary body of ...
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Why do we feel a force in circular motion?

I'm wondering why we only feel the centrifugal force in a circular motion. I did look at Why do we only feel the centrifugal force? question which is exactly that, but I'm not really satisfied with ...
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When is the centripetal force the biggest? [closed]

In a circle motion, where two objects have the same orbital times, but different radius, which one will have the biggest centripetal/centrifugal force? The outer or the inner one?
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Why do vehicles executing circular motion tend to over turn outwards and not inwards?

I understand that when systems are executing circular motion the resultant force acting on the system (centripetal force) acts towards the centre of the circle. However, if a vehicle should over turn ...
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Rotating rope with a ring

I have this ideal system. There is a bar with negligible mass and a ring(a point) with mass $m$. Bar is rotating with angular speed $\omega$. If I see that system from Non-inertial reference system I ...
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Why people feel outward force in rotor ride?

I know centrifugal is fictious force but what is possible reason for the force that people feel in rotor ride outwards. The reason for people not falling down is friction force which is in vertical ...
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Will there be any radial velocity in absence of centripetal force and angular acceleration?

In the question it is stated that there is a ring which can move along a smooth rod. The rod itself is rotating in a horizontal plane with one fixed end with uniform angular velocity. Initially the ...