Car Definition and 999 Threads

Does centrifugal force generate in increase in overall speed? For example, if I am driving down a highway on-ramp which goes in a circular fashion, with my speed slowly increasing, does my overall speed increase because of the centrifugal force generated from the circular on-ramp? Is more force...

The force constant of the spring in a child’s toy car is 550 N/m. How much elastic potential energy is stored in the spring if the spring is compressed a distance of 0.012m? The formula for spring force is F =kx When I do 550 x 0.012m I get 6.6 but I am supposed to round my answer four decimal...

My classmates and I were discussing the impulse-momentum theorem and how they correlate. The example problem consisted of two cars running into solid surfaces at the same velocity. One car ran into a brick wall and came to a complete stop. The other car ran into a haystack and came to a...

Hi guys. I need a battery car, do you know which is then best brand? I've heard about dyno, does someone who about it? Thanks.

Hello everyone, I'm a RC helicopter enthusiast and want to fly in the field where there is no AC wall socket available for charging the helicopter's battery. The helicopter's battery is a 7.4V 1500mAh Lipo (11.1 Wh). My car's battery is 12.65V 74Ah. There is a charger available for charging...

Years ago I thought I would take apart a car battery melt all the lead I thought there would be at least 10 or more pounds of lead I only got a little over a pound of lead there was a lot of heavy dirt but applying heat to this material yielded no lead it seems the acid eats or corrodes the lead...

I understand intuitively that an automobile is set in motion because the wheels apply a force on the road in a backwards direction. Using Newton's 3rd law, the car gets propelled because the road applies a reaction force in the opposite direction. Before starting to ask my full question, I...

Homework Equations P = W*V Fnet = ma V = 3.0 m/s W = 29.9[/B]The Attempt at a Solution I think i got this wrong, but I want you to check if my answer is right :( Heres what i did: So, P = force * velocity P =force*3.0 m/s force = force due to gravity + acceleration (net force) is F = ma =...

Homework Statement Calculate the braking distance for a car traveling at a speed of 35.0m/s down a hill at an angle of 10.0 degrees relative to the horizontal. Homework Equations F=ma v=u + 2as[/B] The Attempt at a Solution The teacher briefly explained this in class saying that the total...

Homework Statement A car accelerates from rest on a horizontal surface. The engine provides a torque of τ = 200 Nm on each of the two front wheels. Each of the four wheels on the car weigh m = 15 kg, have radius R = 0.35 m and can be considered solid, uniform discs. The rest of the car (not the...

Imagine a car that weights 1000Kg. Its engine pushes it forward with a force of 3kN. So the car is accelerating at 3m/s^2 (imagine there are no friction). After 100 seconds (the speed of car at that moment is 300m/s, very realistic), the car hits a wagon that weighs 1000Kg, that is on rest. And...

Hello, I need a quick clarification on how the differential works. I understand its purpose and how it operates but I am not sure how, when a car is turning, the spider gear starts spinning to provide the outer wheel with a higher angular velocity? Is it simply because the outer wheel starts to...

I am trying to understand the construction of CVT Metal belts that are made up of steel elements and some rings. I do not understand the full construction details of the belt. The most detailed information I have got ever is in this PDF on page 5...

Homework Statement 1.Since the roadster seats only two people, it has only two side windows--one on each side. Each window is aligned squarely on the vehicle, so air can flow straight past the window as the vehicle heads forward. However, the air flowing around the roadster's windshield has to...

Dear Every one, [FONT=verdana]Two cars approach an extremely icy four-way perpendicular intersection. Car A travels northward at 12[FONT=verdana] m/s[FONT=verdana] and car B is traveling eastward. They collide and stick together, traveling at 40.1[FONT=verdana]°[FONT=verdana] north of east. What...

Homework Statement This is an attempt to solve a problem I asked about here https://www.physicsforums.com/threads/can-a-car-ever-sit-like-this.929453/ Homework Equations F = kx spring force The Attempt at a Solution using the largest angle down it can get with the front spring compressed all...

I have a rather unusual problem and I want to understand the physics of it. Imagine a car with a high center of gravity and front and back wheels close together. It gets some speed and then brakes, and the front goes down.Just when it stops, and the load tranfer is done, there's no force from...

If the front left wheel of a car traveling at approximately 60km/h impacted with a small concrete step, would any significant amount of force be applied upwards on the car? How would you calculate this force? I'm assuming that to lift a car into the air the force applied upwards on the car would...

When the car is accelerating let's assume the force on it is ma. In order to stop this force we have to apply the brakes which apply a force in the opposite direction. But this force should not exceed ma. It is because the additional force will act on the tyres and create an additional...

Homework Statement A car initially at rest accelerates North for 10seconds. At 11seconds a second car heading west at (Time given in Km/h) collides with the first car at a cross intersection. The cars stick together and slide off across the intersection at (Vf given in KM/h). How much energy...

Hello, since this is a new topic in class I just want to check that I am doing the question correctly. Given: car mass = 710kg starts from rest v0 = 0 travels 40.0m in 3.0s d = 40.0m t = 3.0s Question: What is the net force exerted on the car? F = ___N Work: First I calculated acceleration...

question: The gas pedal and the brakes of a car are used to change the velocity by accelerating the car or decelerating it. Could a steering wheel perform either of these two actions? Explain. P.s: Of course velocity is a vector quantity and if the direction of car change there is an...

Homework Statement A bowling ball sits on the smooth floor of a subway car. If the car has a horizontal acceleration a, what is the acceleration of the ball? Assume that the ball rolls without slipping. Homework Equations torque = R x F = Iα aball= Rα Isphere = (2/5) MR2 The Attempt at a...

Does a car on a banked curve have a component of gravity that accounts for the centripetal force ( along with the normal force)?

Homework Statement A bicycle rider is riding at a constant speed of v(b) and at t=0 is 17m behind the car. The cyclist reaches the car when the car just comes to rest. The car is moving with an acceleration:for 0<t<t(1) a(c)=0 for t(1)<t<t(2) a(c)= -c(t-t(1)) where its initial component...

Homework Statement A train has a length of 118 m and starts from rest with a constant acceleration at time t = 0 s. At this instant, a car just reaches the end of the train. The car is moving with a constant velocity. At a time t = 14.0 s, the car just reaches the front of the train...

Homework Statement I have noticed that in cars in India on rearview mirror(convex) it is written that "objects in mirror are closer than they appear". But for convex mirror of focal length 1 metre and object distance 39 metre, the image distance is 39/40 metre . Which tells that image is closer...

I have a friend who argues that her car creates enough downforce to cause other cars to veer towards it as they pass. I can understand cars behind it being affected, but I can't imagine 4 door car creating a force similar to that felt while driving alongside a semi truck. For what it's worth...

Homework Statement 13.34 The curved portion of the cloverleaf highway interchange is defined by ##R^2=b^2sin2θ##, 0<=θ<=90deg. If a car travels along the curve at the constant speed v0, determine its acceleration at A Homework EquationsThe Attempt at a Solution [/B] Is this wrong?

So in high current circuits which involve say a starter motor in a car we need a starter relay since a normal switch cannot handle the high current flow. I think the reason I'm asking this question is because I don't understand what exactly makes the relay be able to handle the current unlike...

Recently the Bugatti Chiron set a record of some sort for rapidly accelerating to 249 mph and then dropping back down. The engine is something to the effect of 1500 horsepower and the vehicle isn't terribly heavy. Old Airplanes had engines below 400 horsepower and ultra lights can be far less...

Why are these batteries stated as 12V batteries if often they have a reading of greater than 12V e.g 13 or 14 and when you rev the engine hard while in neutral and do a voltage test on some components in the car circuit you get a reading of much much greater like 40V! How is this working? Could...

Hi I watched this video of a guy testing a fusebox with a multimeter: if you skip to 6:10 he uses a multimeter on a particular fuse and when putting the black lead on good ground of car and red lead on either side of the fuse he gets the same reading on both sides. He even comments that there...

Homework Statement A car traveling 93 km/h is 250 m behind a truck traveling 81 km/h. How long will it take the car to reach the truck (in seconds)? Homework Equations d=tv The Attempt at a Solution dc = 93t dt = 81t dc = dt + 250 93t = 81t + 250 12t = 250 t = 250/12 t = 20.83h = 75,000sec...

I am thinking there is about 1/2 kilowatt hour of usable electricity in an 800 cca 12 volt car battery after conversion is this right?

I've been working with what will be a small Arduino 4WD controlled car, however now I've found a problem. The motor shield I used is an Arduino UNO motor shield R3, v3, which means that it can only control 2 motors, howerver I'll be using 4. Is there any way to use this same shild but apply all...

Maybe I've gotten them figured out, but I'm still very much a physics newbie and thus not feeling confident, so if anyone could please review my work, I'd greatly appreciate it! 1. Homework Statement 1) A car accelerates uniformly from 10 m/s to 20 m/s in 5 seconds. a) How far does it travel...

Homework Statement Homework EquationsThe Attempt at a Solution I assume that the wheels are 8ft apart in both x and y direction. Let's denote the length and width of the car by 2l = 8 ft. The torque about an axis connected the contact points of rear wheels : ##\vec \tau = [\{l( \hat x +...

Hello, Is it possible for a car alternator to work like a battery and power a motor?

Homework Statement A trooper is moving due south along the freeway at a velocity speed of 21 m/s. At time t= 0, a red car passes the trooper. The red car moves with constant velocity 28 m/s. At the instant the troopers car is passed, the trooper begins to speed up at a constant rate of 2 m/s^2...

Homework Statement A car of mass m is initially stationary on a smooth track at distance h above the ground. What would be the minimum value of h required in order for the car to remain on the track throughout its journey around the loop of radius r? Homework Equations KE(bottom)>PE (top)...

friction is causes the circular motion in the car around a curve, and if we draw free body diagram we will see the friction force must be opposite the car motion so the force of friction not toward to the center of the curve ,so the force of friction must be not the centripetal force ,mustn't it?

Homework Statement Homework EquationsThe Attempt at a Solution At distance s, the speed of the car is v. $$ v^2 = 2wτs$$ $$\frac { mv^2} R ≤ kmg$$ Let's denote the maximum distance covered without sliding is smax. $$\frac { m2wτsmax} R = kmg$$ $$ smax = \frac {kgR} {2wτ}$$ Is this correct...

I have been reading quite a lot about the Physics behind car dynamics and I have gotten to a point which keeps confusing me, namely - brake locking. I understand brake locking as the situation when the wheels of the car do not rotate anymore but the car is still moving - this causes the tires...

I have a combined motor and screw drive (to 90 deg). It's original purpose was to convert car windows to electric drive... my guess is that it is at least 25 years old, and made in Japan. For scale... the width of the motor casing is 50mm (as you look at it) I'm making a motorised turntable...

My 2004 Honda Civic has 208,000 miles on it. No major repairs on it are needed at the moment. But just curious if there is some formula for determining when it's best to buy a "new" (really I mean "newer," since I'm open to used cars too) car when your current old one has gotten up in age...

Is it possible to create an energy for cars by having some kind of electron emitters built around the car or sound wave emitters to create a layer of dense airwave around the car to cushion any impacts to the car in an accident?

I'm wondering how does speedometer work. To be specific let's talk about car speedometer. I googled it and found out that there are different kind of speedometers, but not quite understood it's working principle. My question is not about how it shows us speed (Mechanically with arrow or...

An article from 2015: 3-D-printed car could hit streets next year. Chris Woodyard, USA TODAY 4:48 p.m. EST November 12, 2015 http://www.usatoday.com/story/money/cars/2015/11/10/3d-printed-car-local-motors-swim/75530830/ Several companies have come out with what they call "3D-printed" cars, but...

As most of you know real racecars have flat bottoms, rear diffusers and in the front well... a variety. So to keep this simple. I am building a car with a flat bottom and rear diffuser, car raked at 4 deg, diffuser at 14 (all details will be adjusted based on learned info) and nothing on top or...