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Questions tagged [centripetal-force]

any force responsible for maintaining an object on a curved path around a fixed center. In introductory coursework this is usually "uniform circular motion" and yields several simple and useful relations. Not to be confused with the centrifugal pseudo-force experienced in an accelerated referenced frame.

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What is the centripetal acceleration for non-uniform speed?

In NCERT physics page no. 122 example 6.7 there is an argument next to equation 6.12 i.e., $T_A -mg= \frac {mv_0^2}{L}$ which means that at the lowest point the centripetal force is equal to $ \frac ...
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What keeps a swinging rubber ball in a horizontal circle above head from falling? [duplicate]

If i swing a rubber ball above my head in a horizontal circle, there will be centripetal motion and force but only in X axis,what keeps the rubber ball from falling since there is only one force ...
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What do we understand by a force being central?

Gravity is said to be a central force. But the resultant force field of multiple bodies is no longer central as it has many attraction points. My Doubts: Is the idea of a force being central ...
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Direction of acceleration vector at the apex of a curve

(Test Your Understanding of Section 3.2) The question wants me to choose the correct acceleration vector, from the given 9 options where 9th option is zero acceleration. Ok, first I thought option ...
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Is tension always the same as centripetal force?

For example, if a ball is attached to a string and released from a vertical height and then pivots around a point to initiate circular motion, tension is equal to centripetal motion. If, on the other ...
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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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Force required for person to leave their seat on the top of a ferris wheel [closed]

Given the mass (kg) of a person on a ferris wheel and the radius of the ferris wheel, how would you calculate the velocity required to temporarily lift the person of their seat at the top of the ...
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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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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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If an object moving in a circle experiences centripetal force, then doesn't it also experience centrifugal force, because of Newton's third law?

When an object moves in a circle, there's an acceleration towards the center of the circle, the centripetal acceleration, which also gives us the centrifugal force (since $F = ma$ is the equation for ...
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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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(Lifting of aircraft wings) Source of centripetal force on a curved streamline?

I am trying to understand how wings lifting work in airplanes. One explanation is found here Basically a fluid portion on curved streamline will experience a centripetal force. This centripetal ...
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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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Why does tension in string become zero when it is at the top most point in a vertical circle?

In the question to find out the minimum speed of a stone fastened to a string at the top most point in a vertical circle, we consider tension $T$ to be zero and equate $mv^2/r$ to $mg$. But isn't it ...
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The reason behind circular motion of vehicles

In all the textbooks and internet resources that I've ever read , most of them explains role if friction in circular motion of an object (let's says a cycle), from the frame of the cyclist i.e. with ...
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The effect of tension force on a pendulum swinging in simple harmonic motion

In physics class, I learned that the reason a pendulum moves about the equilibrium position is due to the force acting towards the center, which is the resultant force of tension and weight. However,...
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Why does the friction act on the inward direction when a car makes a turn on a level road?

I tried looking this question up online but am left a little confused with all the answers, and the diagrams. When a tire of a car negotiates a turn in the road, there exists friction which is ...
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What is the reason behind water not falling from a bucket at the top of loop?

A bucket is rotating in a uniform circular motion. When the bucket is at the topmost point in the loop, the water does not fall. At this point both the tension and gravitational force is acting on the ...
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When a ball on a rope swings in a circle, is there both centripetal force and tension force?

I'm learning about centripetal force and I was shown a scenario where a man was spinning a rope attached to a ball over his head. There's a centripetal acceleration toward the center and therefore a ...
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Uniform Circular Motion vs Change in speed of $x$ & $y$ Components

If you are moving at a set rotational speed the x,y components are constantly accelerating and decelerating (aka simple harmonic motion), this is obvious in order to travel in a circular path. My ...
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Rotation of a disk - should there be a centripetal force?

See the diagram. The tension in the inextensible string should exert a torque causing a tangential acceleration on the rim of the disk. But should there always be a force towards the centre of the ...
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Tension in a ring rotating about its own axis

A ring of mass m and radius R is placed on a smooth horizontal table and is set rotating about its own axis in such a way that each part of the ring moves with a speed v. What is the tension in the ...
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How is angular momentum conserved for the orbiting body if the centripetal force disappears? [duplicate]

When the centripetal force on an orbiting body disappears (e.g. if it the body is a ball and the force was exerted by a string and the string rips, or, more unrealistically, if the body is the earth ...
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Is the velocity of a string that is being rotated around a central point the same at any point on the string?

Say that you have a weight attached to a 2 metre long string, and you are rotating the weight at 5 m/s. Is every point on the string going to be rotating at that same velocity of 5 m/s, or is the ...
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Why do the inner tyres of a vehicle rise when taking a turn at high speeds?

When a person cycles at high speed on a turn, his body bends inwards, to raise the horizontal component of the normal reaction to provide the centripetal force for the turn. The more the speed is, ...
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Centrifugal force and centripetal force in fixed coordinate frame

Hello I have a question related to centrifgual force. So in basic textbooks the movement of a particle in a rotating coordinate frame is derived. A starting point is to consider a fixed and a rotating ...
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How is linear momentum conserved in circular motion?

Consider a system of two charged particles ($+\text{ve}$ and $-\text{ve}$). Let's assume that the negatively charged particle revolves around the positively charged particle due to the force of ...
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Forces in washing machine

I have two front-loaded washing machines, when I wash shoes, in one of them the shoes seem to stick to the walls while it's spinning, but in the other I can hear them falling down now and then. What ...
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Why a coin feels a force when it is put on a rotating horizontal disc

Suppose we have a disc which is placed in horizontal plane and have radius R. Disc is rotating and rotation axis is passing through center of disc and in vertical plane . Now we place a coin a on disc ...
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What causes the mass connected to the end of a pendulum to speed up when its pivot is moved?

Consider a pendulum with a massless and unstretchable string connected to mass M on one end, and to a moveable pivot on the other end. We assume this is on Earth, so gravity acts on the mass. We also ...
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How exactly does artificial gravity work?

A spaceship which uses centripetal rotation to create artificial gravity. Must it always be accelerating? (The rate of rotation for it to work?) If no, and even if yes, if one were to place ...
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Find the resultant force in a motion problem with a loop

In the approximate diagram, the block with mass $m$ starts without movement in the position $P$ in the top of a hill with height $5R$. After that, the block falls down through the hill, and reaches a ...
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Normalize accelerometer data based on non-central location

I am trying to "normalize" accelerometer data for a sensor that is not centered on a car. In the image below, you can see how centripetal force changes based on location. In my case, I only have one ...
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Does acceleration of the rim mean just tangential or both tangential and centripetal acceleration?

On my physics homework, the problem specifies that the acceleration of the rim of a flywheel can't exceed 100g. Does this mean that the tangential acceleration only, or the sum of the tangential and ...
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1answer
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In the case of a ball swinging in circular motion on a rope, w/out gravity or air resistance, what is the force pulling outward on the rope? [duplicate]

I'm thinking it is either the tension due to the ball, or the ball's centrifugal force. But the thing is, are these two forces the same in the conditions I've set (no gravity, no air resistance)? ...
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Torque Required To Make Object Circle

Say an object is going a constant velocity in the direction of A-B, with respect to its orientation. I'm wondering how you calculate the torque required to always keep point B at the edge of the ...
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1answer
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A circular motion problem [closed]

A car goes on a horizontal circular road of radius $R$, the speed increasing at a constant rate $\frac{dv}{dt}=a(constant)$. The friction coefficient of the tyre is $\mu$. Find the speed at which the ...
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1answer
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Centripetal Force Static Friction

I understand that when a car is turning, it is using static friction to do so. The wheel is turned where the perpendicular component of the wheel is opposing the direction of motion, creating a force ...
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When calculating centripetal force, do we ignore non-radial or tangential forces

Suppose an object moving in circular motion in the vertical plane (ie such that gravity points directly downwards) around a central point attached by a string; the object is constantly accelerating as ...
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How is normal force in circular motion?

Let's say I have a vertical ring and a bead is sliding on it. I understand normal force is always acting radially and that in general the radial component of weight is not equal to the normal force....
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Why is the normal reaction zero in this question?

A skier rolling down a frictionless hill where she should fly off tangentially and lose contact with ground. In answer of this question, solution states that $mg\cos x = mv^2 / R$ at that point (to ...
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Circular motion of a ball suspended from the rim of a rotating table [closed]

Susppose there is a ball with radius $r$ suspended to the rim of a circular spinning table with radius $R$ by a string with length $l$ which makes an incline angle $\theta$ with the vertical axis. If ...
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1answer
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Object on a banked curve

If an object is to move on a frictionless banked curve without skidding outwards or inwards, the object is provided centripetal force to maintain it in a circular track by the component of the normal ...
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Why is the centripetal net force always to the center?

I recently came across this diagram in my physics textbook I got a bit confused by this diagram. I thought that the reason why the object accelerates towards the center is because of a net force, not ...
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Elliptical path followed by a charged particle

I was solving some problems in which a charge Q(+ve) was kept fixed and another charge q(-ve) was given a velocity at an angle say $\theta$ with the line joining the two particles. Distance between ...
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Where does the centripetal force come from? How to calculate?

When a bucket filled with water rotates, the water surface will be parabolic( I mean the water is rotating and the water surface is parabolic). Where does the centripetal force of a particle of water ...
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1answer
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How to calculate velocity of an object at the bottom of a circular hill if there is an energy loss due to friction?

Object slides down a circular hill and loses some of its initial mechanical energy due to friction. As an object slides down, friction increases and force in direction of motion decreases until the ...
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why a car with very high speed topples away from the center of turning when it is cornering? [duplicate]

If a car is turning to the right with very high speed, why the car will topple to the left and cause an accident?