Tires Definition and 87 Threads

Hi, I am currently working on a project of building a fuel efficient car. My car has a carbon-fiber chassis, a glass-fiber mainframe and weighs about 110 k.g.s(with driver). I need to find some light weight tires that would go just about right with the rest of the design and also be able to...

Is the physics concept of tires kinematics or work/energy? Please explain why.?

Hi all, I'm writing a car simulation for a game engine, and this problem has me going bonkers. For a car with known mass and center of mass, how can you figure out the "share" of mass that each tire is supporting? For standard tire arrangements (4 tires on 2 axles) I know it's just a ratio...

I was watching the Malaysian Grand Prix, when seeing the really hugely wide tires on the F1 cars got me thinking. Theoretically, friction is a function of only the normal force and the coefficient of friction. Why is it, then, that the cars would have those wide tires?

Homework Statement The weight of a 1142-kg car is supported equally by the four tires, which are inflated to the same gauge pressure. What gauge pressure is required so the area of contact of each tire with the road is 96.5 cm^2? W = 1142 kg A = 96.5 cm^2 Homework Equations No idea...

Hi guys, I have a question. I have lived life in the apparent belief that if a car is moving at a fast enough speed, turning it's wheel becomes increasingly difficult. Could somebody explain that concept to me? I assume it has something to do with the angular momentum of the wheel to make the...

SUVs are supposed to be unsafe because of inferior handling... the main issue is center of gravity, but do the wheels have anything to do with it as well? Do their wheels make it harder or easier to brake and turn? Equations VERY appreciated!

Homework Statement Two bicycle tires are set rolling with the same initial speed of 3.30 m/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 psi and goes 18.6 m; the other is at 105 psi and...

Homework Statement A curve with a 135 m radius on a level road is banked at the correct angle for a speed of 20m/s. If an automobile rounds this curve at 30m/s, what is the minimum coefficient of static friction between tires and road needed to prevent skidding? Homework Equations...

1. Assume that a car who has a mass of 1000kg (including driver) is initially rolling freely (without using the engine) down a 30° slope at a speed of 5m/s. The brakes are used causing the car to stop after 10 m. Find the HEAT CAPACITY of the brakes if they rise in temperature by 10 K...

[b]1. A set of new tires have a diameter of 2.0 ft and are warranted for 60,000 miles. What is the angle through which one of the tires will rotate during the warranty period? [b]2. covert diameter in ft to meters and find the radius: .6096 x .5= .3048 convert miles to meters: 9.65 x...

After riding to work a lot during my internship/REU/whatever thing, I'm back home and want to keep riding anywhere I can. I have an old hybrid mountain/road bike which I really like, but the tires are getting old, especially the back one is getting frayed and I'm getting a bumpy ride for some...

The gauge pressure in each of the four tires of an automobile is 240 kPa. If each tire has a "footprint" of 220 cm2, estimate the mass of the car. @Mods: please move if this is too easy for this forum.

Homework Statement The weight of your 1205 kg car is supported equally by its four tires, each inflated to a gauge pressure of 35.7 lb/in.^2. a) What is the area of contact each tire makes with the road? (in m^2) b) What gauge pressure is required to give an area of contact of 113 cm^2...

Cars Tires Slashed I had parked both of my cars on the street in front of my house, each had one rear tire stabbed in the sidewall by a knife, I'm guessing sometime late Sunday night. The Geo Tracker only gets 2,000 miles a year put on it, the 4-year old tires looked almost new. Discount...

A local garage has big advertizements featuring "free nitrogen inflation of all new tires fitted, as used in Formula I motorsport for the past 20 years". My cynicism assumes this is snake oil so far as normal road tires are concerned - can anybody confirm or deny this? It reminds me of a...

Homework Statement A car is safely negotiating an unbanked circular turn at a speed of 21 m/s. The maximum static frictional force acts on the tires. Suddenly a wet patch in the road reduces the maximum static frictional force by a factor of three. If the car is to continue safely around the...

Information given: Two bicycle tires are set rolling with the same initial speed of 3.60 m/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 {\rm psi} and goes a distance of 18.1 m; the other...

my teacher Never went over this in class. ever. please help, thanks Two bicycle tires are set rolling with the same initial speed of 3.70 m/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. One tire is inflated to a pressure of 40 psi...

I can't figure this problem out. There doesn't seem to be enough information, but its in my school physics book so if someone could help id really apreciate it. "Drag car tires in contact with an asphalt surface probaby have the highest coefficients of static friction in the everyday world...

traveling at a speed of 58km/h, the driver of an automobile suddenly locks the wheels by slamming on the brakes. the coefficient of friction between the tires and the road is .720 how far does the car skid before coming to a halt? i have absolutely no clue what to do?:confused:

On standard road bike tires sometimes they put a soft/flexible kevlar layer to protect against puncture. I was thinking about putting in in hard/rigid kevlar layer to also protect against puncture, I know that this will make the actual tire stiffer and harder to deform, which could be a bonus...

Does anybody know the empirical formula that relates the initial velocity of a car in a street with the length of the mark on ground left by the tires when the brakes are set at maximum force, stopping the wheel ?

I had a flat last week. Today I just went and got the spare fixed, so I'll be ready for the next flat. I get about two flats a year. That seems high compared to most people I know. The reason I have so many is that most of then come from driving my pickup to the landfill where there are always...

If you have four tires to mount on a car these can be mounted in 4!=24 different ways. I initially thought it would be 4*4=16 ways. Why is this assumption wrong? What would the problem have to be like for my 4*4 to be the solution?

I just put slick tires on My Bicycle, my beloved Fuji. It used to have nubby tires. Now the ride is so smooth... They say that there is not a significant decrease in traction on smooth tires, because the rubber-coated nylon tires actually take on the shape of the pavement pebbles as they...

1. Why do tires grip the road better on level ground than they do going uphill or downhill? I have some ideas, but I'm not sure how to word them, or if they are correct. Any suggestions would be appreciated. 2. A mass M(1) = 3.5 kg, rests on a horizontal table and is attached by ropes to...

While riding behind a car traveling at 3.00 m/s, you notice that one of the car's tires has a small hemispherical bump on it's rim. If the radii of the car's tires are .300 m, what is the bump's period of oscillation? Can anyone tell me where to start with this? I'm actually not even sure...

Someone asked me this and I have pondered the same question for some time. I combed the net and came up with nothing. I don't even know what the concept is called or what it would fall under. I know the "illusion" only occurs at certain speeds sort of like resonant frequencies. It kills me...

If the frictional forces are independent of the area of the tire in contact with the road, what motivates this choice?

Why exactly do race cars have their tires heated before a race?

I'm not quite sure if this is the most appropriate forum. Some jerks were throwing beer bottles in the parking lot the other day. I was quite angry at them. Is it possible for broken beer bottles to cut car tires so as to make them lose air?

A car accelerates uniformly from rest and reaches a speed of 19.0 m/s in 7.00 s. The diameter of a tire is 64.0 cm. (a) Find the number of revolutions the tire makes during this motion, assuming no slipping. (b) What is the final rotational speed of a tire in revolutions per second...

Why is the radial tire considered better than other kinds of tires? Marketing hypes aside (if any), what is the scientific reason/rationale behind the generally accepted claim?

bicycle tires question... ok...heres a question that was given in the interview to a student who wanted to study physics at cabridge university. why when there is air loss in the tires of a bicycle(pressure decrease)...the bicycle becomes(heavier)?,meaning...harder to cycle.

help needed! >< Someone please help me with this question! (at least show me how to do it~!) A car slams on its brakes and skids to a halt from 65km/h in 2.67s. Find the coefficient of friction between the car tires and the road. Thanks in advance~! ^^

A tire rolls 468km/h into a 1m diameter/3m tall log buried 1.5m in sand. How many times can it do this before sustaining critical damage and being unable to roll anymore. Assume Earth desert climate, avg temp of 35°C, and steel wheel with rubber tire. Actual testing is requested, but a...