Centripetal acceleration and friction

Was working on this problem in my classes office hours but wasn’t able to finish it. I showed my work

Theta is an unknown but so is the coefficient of friction. How can I solve for both?

https://imgur.com/a/GEGQUFl

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πŸ‘€︎ u/Green_Razor0
πŸ“…︎ Oct 16 2021
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My demo of how acceleration and centripetal force works. Zeg is the test subject today. He flys backward because of the rapid acceleration and to the side as it spins like in a car (centripetal force) Upvote please please peas and cheese! v.redd.it/bri9bngvwk281
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πŸ‘€︎ u/collinpiggy_4
πŸ“…︎ Nov 29 2021
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Can someone explain what centripetal acceleration is?

I know what the formula is, but I’m having trouble grasping what it actually represents. Like, why does it have a magnitude if the magnitude of the velocity is constant when traveling in a circular path? An analogous explanation or an image would be greatly appreciated.

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πŸ‘€︎ u/foster_music
πŸ“…︎ Oct 24 2021
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Shouldn't the magnitude of change in velocity after 1 second be equal to the centripetal acceleration? My work is attached, where did I go wrong?
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πŸ‘€︎ u/Socks0331
πŸ“…︎ Nov 23 2021
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[A level Physics: Centripetal acceleration] 3ai. I got 119543 but MS says its 30000.
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πŸ‘€︎ u/BigBlackMuscles
πŸ“…︎ Sep 18 2021
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[Grade 12 Physics: Centripetal Force/Acceleration] Solving for Accel. only given radius?

Hey everyone,

I'm having some trouble with the following physics question. Was wondering if anyone could help?

Q: A cylindrical space station has a radius of 57m. The rotation produces artificial gravity equal to 90.0% of the gravity on Earth's surface. (I am assuming then Fg = m(9.8)(0.9) ? )

a) Calculate the centripetal acceleration along the wall of the station.

b) Determine the period of rotation of the station.

If anyone has some pointers on where to start, that would be awesome! Thanks!

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πŸ‘€︎ u/h34rtss
πŸ“…︎ Oct 16 2021
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Centripetal Acceleration Question

Lets say I'm spinning an object on string horizontal to the ground at a substantial speed. The object is experiencing a acceleration towards the center of the string, lets say for the sake of argument 100m/s^2. What I'm confused about is the spinning object is also experiencing a acceleration due to gravity of 9.8m/s^2, so why don't you see the object also accelerate towards the ground as well.

I'm guessing it has to do with the Centripetal acceleration somehow canceling out the gravitational acceleration but I don't understand it mathematically, would anyone be able to explain?

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πŸ‘€︎ u/AnyonmusQuestions
πŸ“…︎ Sep 05 2021
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i was deriving centripetal acceleration but this formula doesnt work, am i completely wrong or did i mess up somewhere?
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πŸ‘€︎ u/weeb_kingsnake
πŸ“…︎ Aug 03 2021
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Today’s virtual classroom topics were acceleration and centripetal force. reddit.com/gallery/m3uken
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πŸ‘€︎ u/Crux1836
πŸ“…︎ Mar 12 2021
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Dizzyness from centripetal acceleration

We become dizzy when subjected to centripetal acceleration for example in a playground roundabout. However, linear acceleration does not make us dizzy.

Is the reason we get dizzy from centripetal acceleration due to the acceleration gradient in the radial direction? Or are there other reasons?

Edit: dizziness, not dizzyness :)

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πŸ‘€︎ u/Shamon_Yu
πŸ“…︎ Aug 09 2021
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Does centripetal acceleration warp space in the same way as linear acceleration?

Literally the title.

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πŸ‘€︎ u/skaov2
πŸ“…︎ Jun 17 2021
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centripetal acceleration caused by change of direction

Hello i recently saw here a debate about centripetal acceleration but i don't quite get whats its impact. If let's say car is going to the sharp turn it will maintain it's speed but change direction of velocity which will increase acceleration but i just don't Understand how it changes acceleration if the car maintain it's speed where does that acceleration go like if im going 28m/s and make sharp turn where does all that acceleration go? i have same speed as before and i changed direction. Secondly if let's say a ball on string would keep spinning at the same speed the acceleration would be infinite because it's just keeps and keeps which increases acceleration.

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πŸ‘€︎ u/jejkob11
πŸ“…︎ Apr 12 2021
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Centripetal acceleration fuckery v.redd.it/m844qm4kx0841
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πŸ‘€︎ u/swerZZie
πŸ“…︎ Dec 31 2019
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Battery powered Micro racer overcomes gravity through centripetal acceleration and minimal friction with the glass surface gfycat.com/bruiseddeficie…
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πŸ‘€︎ u/Thund3rbolt
πŸ“…︎ Sep 09 2020
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When is the centripetal acceleration and gravitational field equal?

Suppose we have a star and a planet orbiting it. When we want to find the orbital velocity we can equate F=mv^2 / r and F= GMm / r^2. However I found that the centripetal acceleration is not always equal to the gravitational field strength at that point, its always waaaay smaller. Im kind of confused, why can we equate those 2 equations to find orbital velocity when the centripetal acceleration is not equal to gravitational field strength.

I should note that in the course that im doing its pretty basic so we assume circular orbits.

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πŸ‘€︎ u/Legend0fAwesome
πŸ“…︎ Dec 28 2020
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Centripetal acceleration and Tangential acceleration independence.

Centripetal acceleration and tangential acceleration are perpendicular. This tells me that they are independent of each other, increasing the magnitude of tangential acceleration should not affect the magnitude of the centripetal acceleration.

My question is that if centripetal acceleration is defined as a=v^2/r, shouldn't the increase in velocity due to the tangential acceleration affect the centripetal acceleration?

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πŸ‘€︎ u/Wow_Phys199
πŸ“…︎ Mar 19 2021
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[Honors Physics: Uniform Circular Motion] I know the formula for tangential velocity, but how do I get the numbers to be able to be put in the formula and work? I also do not understand the difference between centripetal acceleration and centripetal force.
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πŸ‘€︎ u/TriggeredWatson
πŸ“…︎ Jan 14 2021
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Centripetal Acceleration [Banked curve with friction]

A curve of radius 40 m is banked so that a

1090 kg car traveling at 60 km/h can round it

even if the road is so icy that the coefficient of

static friction is approximately zero.

The acceleration of gravity is 9.81 m/s

Find the minimum speed at which a car can

travel around this curve without skidding if

the coefficient of static friction between the

road and the tires is 0.6.

Answer in units of m/s.

First, I solved for v --> v=(sqrt(r(Nsin(theta)-fcos(theta))/m), so now i need to find Nsin(theta) and fcos(theta)

then, i wrote sum of forces without friction and got :

Nsin(theta) = m * (Ac) = 7563

where Ac = v^2/r

Ncos(theta) = mg = 10682

and I know that f=muN, so :

fcos(theta) = mu * Ncos(theta)

Now, i have all the components i need and plug it into my original equation --> v=6.5 m/s

The answer is wrong. what did i miss?

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πŸ‘€︎ u/Alludent
πŸ“…︎ Oct 23 2020
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Question About Normal Force In Relation To Centripetal Acceleration

Hi all,

I am working on a question about a car going over some hills and asks me to find where the normal force acting on the car is greatest.

In an explanation it said the normal force is the least when the car is going over a half circle hill because the centripetal acceleration is in the downward direction.

Wouldn't a downward force cause the normal force to increase rather than decrease?

Thanks for the help!

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πŸ‘€︎ u/IG2K
πŸ“…︎ Oct 27 2020
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What is the force causing centripetal acceleration?

Anything that spins, by definition has a net force acting on it. Because if something is spinning, it's velocity, by definition is changing. So if it is accelerating, by definition there is a net force acting on it.

Alright, so I can understand where this force comes from some examples. If I hold on to a string with a ball and spin it, the force is coming from the tension in the string which is coming from my hand.

But what about when there doesn't appear to be be an external force? For example, I spin a chair. After the initial external force when I spin it, after I let go - the chair still spins. Yet there is no external force acting upon it! So where is the centripetal force acting on it? If there is no force, how is the chair still accelerating? Another example would be a spinning dreidel.

I realize there must be some flaw or oversight in my reasoning, and would be glad to be corrected. Thanks!

Inspired by the latest VSauce video. He explains angular momentum really well, except I felt it missed this specific concept:

https://www.youtube.com/watch?v=_WHRWLnVm_M

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πŸ‘€︎ u/omridag333
πŸ“…︎ Oct 01 2019
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(CLICK IMAGE FOR BETTER QUALITY) Centripetal Acceleration Help
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πŸ‘€︎ u/carsonator8
πŸ“…︎ May 26 2020
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Why is the normal force the main force and gravity a component of the normal force during centripetal acceleration whereas gravity is the main force and the normal force is a component of gravity on a normal incline?
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πŸ‘€︎ u/Drjny
πŸ“…︎ May 19 2020
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Centripetal acceleration of two discs

Let's say you have a rotating disc D1 and a smaller rotating disc D2 inside of D1. What is the acceleration of a point of D2? Do you have to calculate de centripetal acceleration of both discs and add them or just one of them? https://imgur.com/a/IKDIY0H

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πŸ‘€︎ u/mathaccounttt
πŸ“…︎ May 25 2020
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Physics help with centripetal force and acceleration

A person is swinging a string with washers connected to it that have a mass of 237.8 g how would i find the centripetal force on the string.

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πŸ‘€︎ u/reecejensen
πŸ“…︎ May 20 2020
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Centripetal acceleration of the moon

I think I know how to do this problem, but just want to confirm.

The question is asking me to find the centripetal acceleration of the moon due to its orbit around earth, using the universal gravity equation Fg=G*me*mm/r^2 (G equals 6.67E-11, me equals mass of the earth, mm equals mass of the moon, r equals distance between the two masses). Basically, what I did was set Fg equal to mm (mass of the moon) times a (its acceleration, the value I'm trying to figure out), and set that equal to the universal gravity equation, which comes out to a=G*me/r^2 (mm being cancelled out). That's what I do, right? (The values for mm, me and r are given in the problem)

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πŸ‘€︎ u/Macromind101
πŸ“…︎ Jun 16 2020
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