#coefficient of kinetic friction

[indigo-lamppost]

Homework diagrams that make no sense out of context

[celaenaeiln]

Dick: *searching for his teammate post-battle* Romeo, Romeo! Where art thou Romeo?

Jason: Shut up. Shut up! Don’t you dare desecrate Shakespearen literature you Neanderthal.

Dick: *offended* what?

Jason: heh, you didn’t get that? Dumb.

Dick:

Dick: Well, Little Wing, right now you’re walking an average speed of 3.1 mph and you’re going to fire your grapple gun to shoot across to another building but in order to do so you need to increase your running speed because the tension on the string is opposing the Normal force at an angle and if you count the weight of gravity, you have to calculate F=ma with cos of 46 degrees or else the grapple won’t latch on but since there’s a high frictional force between your boot and the ground, the coefficient of static friction is much higher than normal so as such, you need to lower the coefficient of kinetic friction so you have the momentum to reach peak velocity needed to boost you into the air and not suspend your rope so that’d be your final velocity squared equal to your initial velocity squared minus 2 times gravity times your final height minus your initial height. So in conclusion, your initial speed of run must be 5.3 mph if you don’t want to bash your head open on a brick wall.

Jason: what.

Dick: oh you didn’t get that? Dumb.

Jason: ….Bitch.

[5-cz]

Physics (Mechanics) Vocab

some physics vocab brought to you by your local physics major

力学

mechanics, lìxué

运动学

kinematics, yùndòngxué

动力学

dynamics, dònglìxué

力

force, lì

作用力

applied force, zuòyònglì

重力， 引力

gravity, zhònglì, yǐnlì

质量

mass, zhìliàng

距离

distance, jùlí

速度

velocity, sùdù

加速度

acceleration, jiāsùdù

摩擦力

friction, mócālì

摩擦系数

coefficient of friction, mócā xìshù

张力

tension, zhānglì

扭转力

torque, nǐuzhuănlì

位移

displacement (location), wèiyí

排水量

displacement (liquid), páishuǐliáng

向心

centripetal, xiàngxīn

离心

centrifugal, líxīn

运行轨道

orbit, yùnxíngguǐdào

空气阻力

air resistance, kōngqì xǔlì

压力

pressure, yālì

高

height, gāo

矢量

vector, shǐliàng

波

wave, bō

弹簧

spring, tánhuáng

周期

period, zhōuqī

频率

frequency, pínlǜ

能量

energy, néngliàng

动能

kinetic energy, dòngnéng

势能，位能

potential energy, shìnéng, wèinéng

热能

thermal energy, rènéng

[pine-dexter]

I wanna hold your hand while we discover an excitin' way to convert our potential energy into kinetic energy. We'll have to figure out the coefficient-like of friction of our bodies, and I'll need ya to determine the rigidity of a certain "object" o'mine. It's pretty rigid on account of the fact you're made of Copper Tellurium and have the relative hotness of a thousand suns. I know. I did the calculations. Look at this here pile of calculations I did - a whole list of them along with my plans for runnin' this experiment (it comes with diagrams, categories listed in alphabetical order - I gots it all laminated just for ya!). So, whaddya say? Ya can't see it because this is an anonymous letter-like but I'ma wagglin' my eyebrows in a suggestive manner.

[Error 40FORD]

It takes him a moment to recover from this, simultaneously flustered and also very interested in those calculations. One man's math problem is another man's foreplay.

"L-Laminated? That's ah, well...I can't very well say no that. Who wouldn't want to see your...calculations?"

[caztiel]

wishing to be the coefficient of kinetic friction in ur jeans

[octagonsolution]

Coefficient of Friction Testing Machine

A Coefficient of Friction testing machine (COF) is a laboratory instrument used to measure the frictional force between two surfaces. It determines both static and kinetic friction coefficients, providing valuable data for various industries.  

Key components:

Load frame: Applies a controlled force to the test specimen.

Sled: The moving component that slides over the test material.

Force sensor: Measures the frictional force.

Data acquisition system: Records and analyzes test data.

Applications:

Packaging: Evaluating slip resistance of films, papers, and corrugated boxes.

Automotive: Testing tire-road interaction, brake pad friction, and component compatibility.

Textiles: Assessing fabric grip, slip resistance, and wearability.

Floor coverings: Determining slip resistance for safety purposes.  

Industrial manufacturing: Analyzing material compatibility and optimizing production processes.

Visit Here :- Octagon Solutions

[mitchell-nihil]

I don't know if any math people follow me but if they do can you maybe confirm whether or not my answer to a test i just did was right, because I redid the equation after realising I didn't use the correct equation to find the force of friction and got 500, on the dot, and wanted to know if my new answer is right

Basically, the question was "An object of unknown mass is on earth, and when pushed with an applied force of 1980N goes from rest to a velocity of 12m/s in 6s. If the coefficient of kinetic friction between the object and the ground is 0.20, what is the mass of the object?"

It's literally a grade eleven physics class but the question has me a little stressed

[zenlesszonezero]

[simcardiac-arrested]

A block of mass m1 = 3.24 kg and a block of mass m2 = 6.87 kg areconnected by a massless string over a pulley in the shape of a solid diskhaving radius R = 0.270 m and mass M = 10.0 kg. The fixed, wedge-shapedramp makes an angle of 0 = 30.0° as shown in the figure. The coefficient of kinetic friction is 0.360 for both blocks.

Determine the acceleration of the two blocks.

2

[tutoroot]

What are the Types of Frictional Force? 

The frictional force is a fundamental concept in physics that refers to the resistance encountered when two objects come into contact and attempt to move relative to each other. It is the force that opposes the motion or tendency of motion between the surfaces of two objects in contact. Frictional force arises due to the irregularities on the surfaces and the interaction between the molecules of the objects. 

Frictional force plays a significant role in our daily lives. Whether it’s walking, driving, or even writing, we constantly experience frictional forces. Understanding this force is crucial for various scientific and practical applications. 

Frictional Force Examples

To better understand the concept of frictional force, let’s consider a few examples: 

When you try to push a heavy box across the floor, you encounter resistance. The frictional force opposes your applied force, making it harder to move the box. 

When a car applies brakes to slow down, the frictional force between the brake pads and the wheels helps in reducing the car’s speed. 

A pencil on a table stays in place due to the frictional force acting between the pencil and the table’s surface. 

Steps to Calculate Frictional Force

To determine the frictional force present in a given situation, follow these steps: 

Identify the type of friction involved, whether it is static or kinetic. 

Determine the coefficient of friction (μ) for the given surfaces. This information is often available in physics reference books or can be experimentally measured. 

Calculate the normal force (Fn) between the two objects. 

Substitute the obtained values of μ and Fn into the corresponding frictional force formula. 

Solve the equation to find the frictional force acting on the objects. 

By following these steps meticulously, you can accurately calculate the frictional force in various circumstances. 

Units of Frictional Force

The unit of measurement used for frictional force depends on the unit system employed. In most cases, the frictional force is measured in Newtons (N) in the International System of Units (SI). However, other units such as dyne or pound-force can also be used to express frictional force in different systems. 

Types of Frictional Force

Frictional force can be further categorized into different types based on the nature of the surfaces and the conditions under which it occurs. Let’s explore each of these types and their subtypes: 

Dry Friction

Dry friction, also known as Coulomb friction, is the most common type of friction that occurs between solid surfaces in contact. It can be further divided into two subtypes: 

Static Dry Friction: Static dry friction comes into play when an object is at rest and resists any attempt to set it in motion. It prevents the objects from sliding past each other. 

Kinetic Dry Friction: Kinetic dry friction occurs when the object is in motion relative to another surface. It opposes the motion and acts in the opposite direction. 

Dry friction is experienced in various everyday situations, such as when you try to walk on a rough surface or when gripping an object. 

Fluid Friction

Fluid friction, as the name suggests, refers to the friction experienced by objects moving through a fluid, such as air or water. It encompasses two significant subtypes: 

Viscous Friction: Viscous friction is encountered when an object moves through a highly viscous fluid, like honey or oil. It arises due to the internal friction within the fluid and opposes the motion of the object. 

Drag Force: Drag force, also known as air resistance or water resistance, is a type of fluid friction experienced by objects moving through air or water. It increases with the speed of the object and acts in the opposite direction. 

Fluid friction is prevalent in scenarios such as swimming, flying, or even the movement of vehicles through the air. 

The frictional force is a fundamental aspect of physics that influences almost every aspect of our lives. Its existence is crucial in maintaining stability, controlling motion, and enabling the functionality of countless objects and systems. By understanding the formulas, types, and examples of frictional force, we gain a deeper appreciation for the role it plays in the world around us. 

Interested in grasping concepts effortlessly, just like the explanation above? Explore our Tutoroot Blog section for simplified learning. Elevate your understanding of subjects and get your doubts cleared with Tutoroot online tuition. Experience Tutoroot’s online home tuitions now by scheduling a FREE DEMO session.

[prestotesting]

Coefficient of Friction Tester Manufacturer: Testing-Instruments

Testing-Instruments is a reliable and professional manufacturer and supplier of Coefficient of Friction Tester instruments in India and abroad. They offer a range of testing instruments that are used to measure the coefficient of friction Tester of various materials such as plastic films, sheets, laminates, pipes, and paper. The Kinetic friction tester is an important parameter that determines the slip properties and handling characteristics of the materials. Testing-Instruments provides Coefficient of Friction Tester instruments that are accurate, reliable, easy to use, and comply with international standards such as ASTM D1709, ISO 7765, and IS 2508.

Digital Coefficient of Friction Tester: This model has a digital operation and a computer interface for advanced functionality and data management. It can measure the coefficient of friction at four different angles: 20°, 45°, 60°, and 75°. It has a digital display and a data logger for enhanced performance and accuracy.

Testing-Instruments has branches in Mumbai, Kolkata, Chennai, Delhi, Bangalore and provides quality testing equipment at the best prices. You can visit their website to learn more about their products and services. Testing-Instruments is the best Coefficient of Friction Tester manufacturer and supplier for your testing needs.

Know More -- https://testing-instruments.com/co-efficient-of-friction-tester/

[advancedsurfacetechnologies]

Electroless nickel with boron nitride plating offers corrosion resistance and improved lubricity, ideal for high speed machining applications on hard metals or high temperature components. Static and kinetic coefficients of friction were tested on nickel (Ni) coatings with and without embedded c-BN nanoparticles under both dry and water (seawater) lubricated contact conditions with bronze as the counter-body material, to assess their static and kinetic coefficients of friction as well as to study heat treatment effects and the type of incorporated c-BN particles.

To Know More Visit Here:- https://theamberpost.com/post/boron-nitride-electroless-nickel

[zenlesszonezero]

[drwcn]

Wen Ning just assumes that his efforts were for naught and that Wen Qing died anyway. He and WWX are all :( about it.

LWJ is hit with the realization that not only has he left the stove on, but he's left the garage door open.

And turns out Wen Qing is just not around during the whole resurrection business. She went on a scientific expedition into the mountains to look for specific herbs or magical plants or whatever.

So WWX doesn't get to meet Wen Qing even when he comes to Lotus Pier. He's allowed inside, of course, instead of being made to sit on the doorstep since Jiang Cheng knows about the core transfer. However, he's also aware that his idiot brother WWX doesn't know that he knows. So he acts distant and aloof to put up a front for appearance's sake, when really he's all mushy and emotional on the inside.

WWX is confronted with the rest of Jiang Cheng substantial litter, and he turns to LWJ all scandalized and accusatory - Did you know about this??????? - as if LWJ is responsible for the horny way that JC turned out to be. Four sons and four daughters?? When does he got the time????

WWX looks at the oldest kid who's fifteen and the youngest kid who's one, and just about has a qi deviation thinking jiang cheng got himself like...a whole harem of beautiful baby mommas.

(My chengqing au always involves them having no kids or like...a fuck ton. I don't see how theyre gonna stop once they give in to the urge of being together. The static coefficient of friction is high, but the kinetic coefficient of friction is minimal)

WWX: so... like Jiang Cheng has a lot of women huh?

LWJ: ........................ (ー_ー;)

And at the Guanyin Temple the next morning when the entire thing goes down, the Jiang disciples arrive with four of eight heirs and the Lady of the House leading the way.

The Kids & the disciples: Dad/Father/Sect Master!!! Omg you're bleeding, who did this we'll kill that motherfucker -

WQ: *calm and professional* Sect Master, I see you were careless again...are you alright?

JC: Apologies for making furen worry. *soft heart eyes*

WN & WWX : (@_@) Σ(￣□￣;)

Later:

WN: *surrounded by wide eyed children calling him jiujiu* so....

WQ: *happy*....yeah.

meanwhile

WWX: You made 8 people with her, and she still calls you Sect Master?!!!!

JC: she calls me by my name too. *a reluctant blush*

WWX * stares at jc and then at child #8 jc is rocking and then at jc* that is.... disGURSting you nasty ass -

apparently I'm not done with my newly resurrected chengqing bullshit -

semi crack semi angst idea that wen ning did to his sister what wen qing did to wwx, aka: wen ning had listened to wen qing all his life, but by god he was not gonna like her die for his mistake.

wen ning went to lanling by himself maybe with the rest of the wens.

in any case when the cultivators stormed the burial mount after wwx's demise, lwj found a-yuan, jiang cheng found wen qing.

just imagine the awkward lock-eye between these two dumb bitches

I won't snitch if you don't snitch.

obviously wq and jc has to work through some stuff but like...

very quickly jc realizes ppl straight up don't recognize wq. Think about it. She showed up for 35 seconds at Cloud Recesses and never attended class. And then... the war happened and she was never really a player. Probably some ppl met her, but how many of them are still alive?

Sure jc had to hide wq the first couple of years, but after jgs mysteriously bit the dust... things relaxed by a lot.

Jc being that bitch that stares everyone in the eye whilst lying to their faces: how dare you accuse my wife of being a dead war criminal.

Jgy: she is clearly wen qing.

Jc: Prove it.

Lqr *furious* : wangji, is this not wen qing?

Lwj: .....it is not.

Lxc & lqr: ????????

Wwx's resurrection would be wild.

[superskaian]

bro i dont know fuck of shit about zodiac signs.....the only one i can recognize is aries...

[pallases]

i’m going to cry i’ve been sitting here with this fucking physics quiz for three hours and i’ve literally gotten done one (1) problem that i probably didn’t even do right and i still have to finish a work sheet and practice test for pre-calc bc the test is tomorrow and then there’s other stuff i definitely should finish but definitely won’t at this rate and also take a shower

[mmm-asbestos]

How strong do you think is Amy exactly? I mean not just in your comic (which btw is amazing, would love to see them interact canonly like this) but also in the Sonic Mania Special short. That pink hedgehog dragged a 125,2kg heavy robot for hours u p h i l l ! !

Oh thanks!

Well? Let’s see for ourselves. You mentioned sonic mania special, so we would use it as a reference for our conclusions. After this you might reconsider what the concerning bit IS in this animation.

First, dragging uphill.

Would that be hard? Yes. How hard exactly? Let’s see.

What do we know? As you said, Metal is indeed 125,2 kg (276 lbs for you americans). A reasonable weight for a weightlifter. OR IT WOULD BE, if Amy wasn’t ~ 25 kg (~ 55 lbs), which is a FIFTH of Metal’s weight.

Would her dragging him and not just carrying make it easier tho? Let’s get some more numbers. What can we deduce? As yall can see, the incline is 23 degrees, and the surface is, well, snow...

AND WOUDN’T YOU KNOW, THAT’S EXACTLY ENOUGH INFORMATION TO SOLVE 7TH GRADE PHYSICS PROBLEM LET’S GET IT

I’ll quickly pull up the coefficient of kinetic friction on snow…

Not exactly metal on snow, but I think the friction would be comparable, let’s say the coefficient is 0,5.

That’s all we need.

But what does the result mean? Well, force of 1018 N is an equivalent of holding a 103 kg (229 lbs) weight, which is, again, 4 times Amy’s weight. Which is a bit lighter than just carrying Metal.

And you might think ok. That’s fair. But you know why I did all this counting?

TO PROVE YALL ARE LOOKING AT THE WRONG THING.

SPECIMEN TWO. AMY PUSHING METAL FROM UNDER THE FALLING TREE.

DO I NEED TO REMIIIIND YOU. METAL IS . 125 KILOS. AND SHE SWEEPS HIM WITHOUT ANY SLOWDOWN!!!!! HE GOES FROM ZERO SPEED TO LIKE 10 METERS PER SECOND IN A FRACTION. WHILE AMY IS TWENTY FUCKING FIVE KILOS OF MASS. OK LET ME JUST.

25040 N. You wanna see how that would feel?

LIKE THIS.

A FUCKING 2555 KG(5632 lbs) G VAGON DROPPED DIRECTLY ON YOUR HEAD FROM ABOVE.

AND YALL ARE TALKING ABOUT DRAGGING HIM UPHILL GET OUT

And that’s based solely on this holiday special.

This 55 lbs child can drag a robot 5 times her mass. She can do anything.

Amy should be protected at all costs.

Thanks for coming to my ted talk.

[zenlesszonezero]

[azure-firecracker]

Fnet = ma

Net force on the system: frictional force on m1 (negative) + tension of string on m1 (positive) - tension of string on m2 + force of gravity on m2.

Since it’s one long string and the pulley is massless, the tension forces cancel out, leaving fnet on the whole system as -frictional force on m1 + force of gravity on m2.

Kinetic friction = coefficient of kinetic friction x normal force on m1. Since m1 isn’t accelerating up or down (it’s on the table), the normal force is equal to the force of gravity on m1 which is equal to m1 x g = 2kg x 9.8m/s^2 = 19.6N

19.6N x 0.2 (coefficient of kinetic friction) = 3.92N

Force of gravity on m2 = m2g = 9.8m/s^2 x 0.6 = 5.88N

So Fnet = -3.92N + 5.88N = 1.96N

Fnet = ma so a=Fnet/m

M of the system = m1 + m2 = 2kg + 0.6kg = 2.6kg

So a = 1.96M/2.6kg = 0.754m/s^2

I think:)

someone should solve so i can see where i went wrong