Vehicle Definition and 396 Threads

Homework Statement Hi I am new here and really struggle with maths/physics based problems as i have very little experience in them due to studying other subjects at A-Level and now studying Motorsport Tech at uni. This is the questions we have been set for xmas work. A rear wheel...

Acceleration of vehicle when given torque to the wheels... Ok so I am trying to figure out the acceleration of a vehicle that has a maximum of 381ft lbs of torque.With a mass of roughly 1700kg. If I use the formula f=ma, a=f/m and if I convert ft lbs to Nm its roughly 517/1700=.30m^2/s^2...

Homework Statement I am just enquiring about car brakes, and figuring out how much force needs to be applied to stop a moving object (car). Homework Equations 1457Kg – Curb weight of the car (overall mass) F = M x A 1457kg x 10mph = 14570 (Newtons) 1457kg x 20mph = 29140 N...

Hey guys, I'm kinda simulate vehicle dynamics. I got gear ratios, torque and RPM values. I find how to calculate instant accerelation from http://spreadsheets.google.com/ccc?key=pBCH2ClzmrplHUNFgrkT7HA Ok now I got acc. :wink: I can calculate velocity from acc but my problem is how to...

Good Morning All! Is it considered poor engineering to gear up a 100 RPM high torque motor to achieve a 1000 RPM medium torque final drive? What would be the major drawbacks? Thanks! Bill

I am very interested in engineering, so I decided to build a mousetrap vehicle. I want my vehicle to reach 5 meters and return back to its original destination by itself. I need help constructing this system to accomplish this goal. Is there any way to build it with 2 mousetrap at most?

Submarines are nuclear powered. How small of a nuclear-fission powered unit be made and could it be fitted inside a tank or other land vehicles?

am designing a autonomous underwater vehicle .well,i got 2 issues right now regarding its buoyancy control and water proof joints. can anyone suggest me some ways by which the buoyancy can be controlled and some methods to make the joints of auv water proof efficiently.

1. I am looking to verify my calculation. Question A vehicle of mass 5Tonnes is traveling with a velocity of 80kmh-1 if it needs to stop within a dstnace of 0.5 km using a constant braking force what is the deceleration of the vehicle 2. V^2 = 2xSxA, A=V^2 / 2S 3. A=V^2/2s 80kmn =...

Hi, I am looking for bearing in chassis design of vehicles...what i want to know is how do i proceed with chassis design? As in, where do i start, what do i do next? and next? Just need an outline, coz i do have some books i am trying to get started on... thanks in advance

Say you have a space elevator 47000 km* long (well past the point where centripetal acceleration cancels out gravity) There is a vehicle traveling up the cable with a pretty high velocity, and instead of braking it just shoots off the top. (assume the counter weight allows this) At the...

I put LED LIGHTS 60 WATTS on an off road vehicle with a stator not an alternator. When i use my winch or the cooling fan comes on the light goes out. I can turn the light switch off then on and it comes back on. It only happens when there is a fairly heavy draw on the system. Can this be fixed...

I've always been fascinated by and wanted to know more about the internals of a car: everything from the engine to the transmission to the suspension and the chassis. Currently I am a year 1 ME student, so I don't have enough physics knowledge to study the logistics in depth in that regard...

I've been fascinated by the idea of using a nuclear reactor (either pebble-bed or particle-bed)as a powerplant for an aerospace vehicle, but of course there is the problem of coupling the thermal energy to the propellant flow by direct contact without having bits of radioactive debris from the...

Homework Statement A vehicle of mass m experiences a constant frictional resistance ma and air resistance proportional to the square of its speed. It can exert a constant propelling force mb and attain a maximum speed V Show that, starting from rest, it can attain the speed V/2 in the time...

ok...i have a small question on aerodynamics for cars: in fluid mechanics, we studied the flow of air past an airfoil, which is designed to reduce drag (and obviously lift has a lot to do with it, but that is irrelevant for me now, so i am ignoring it). My question is that why aren't cars...

Hello everyone, I just joined the forum because my friends and I have been having an argument for a couple hours now over magnetism and its uses. So I will just jump right into our argument... I say that an electromagnet attached to the front bumper of a vehicle can be attached to the...

Suppose some vehicle with mass m is moving down a hill with angle \theta . Say that the vehicle is exerting a force parallel to the ground of magnitude f . Suppose that the maximum velocity of the vehicle on flat ground is v_{max} . What is the max velocity of the vehicle down the...

This caught my interest after someone posted the question on a cycling forum of would a heavy and light cyclist have different accelerations down an inclined plane when coasting from a stop. Many people had observed that heavier cyclists do indeed have a greater acceleration, but I wasn't...

Homework Statement I need to come up with a general formula that a vehicle with given mass(m), friction coefficient(u), acceleration force(f), and slope(theta), return the amount of acceleration on the vehicle. Homework Equations max acceleration on an incline = -mgsin(theta) +...

Hi I need help for this structure. It is loaded as shown - point E and G is wheels added as free bearings. I need to know the bending in Beam AD and also EF. I tried isolating beam AD and see it as an statically inderteminant beam to the second degree - but i am not sure this is the right...

please help me to find out what is the best and simple way to convert the energy of falling mass to into forward motion? i have to design and creat a vehicle which uses a mass falling over a short distance to power a vehicle up an inclined ramp.

hi, I am currently building a drag racing game and I am wanting it to be as physically accurate as possible. my question is, when a driver drops the clutch in a vehicle what needs to be taken into account to calculate the force acting on the vehicle while the wheels are spinning? is it possible...

Hello, I have recently found an urge to understand the amount of energy that I use while driving. I would like to be able to record tracking data via GPS in a GPX format, and then calculate the amount of energy that would be used to perform the same trip using various vehicle models. I...

Hey all, Our team is currently working on a project which contains the pullback mechanism like the ones you find in toys. We are competing against other teams and have a fun match at the end. The idea is to pull or push the vehicle back 1 meter and store as much as possible energy. We only have...

Hey Just needed some help with analysis of vehicle loading in dynamic and static conditions.Basically what are the axial and radial loads acting on the axle/wheel in static and dynamic conditions? Accompanying formula would be helpful. How would i go about finding out the loads under static...

I got this in my school FYI email: I think my engine and transmission oil needs more time than that to heat up and work properly. Also, suddenly driving off with a cold engine block is a good way to develop cracks in the cylinder walls - which is why you don't just pull the throttle all the...

Hi i'm writting a report on road vehicle drag. Are there any free resources online / journals that i can use for research? my questions: Relationship between Drag and Turbulence what does a engineer design in a car? (engines, the body-aerodynamics..) and the relationship between...

1. In Jan. 2004, NASA landed exploration vehicles on Mars. Part of the descent consisted of the following stages:? Stage A: Friction with the atmosphere reduced the speed from 19300 km/h to 1600 km/h in 4.0 min. Stage B: A parachute then opened to slow it down to 321 km/h in 94 s. Stage C: Retro...

Hello. I am new to this forum. I am a chemist. Physics is not my strength. Recently, I got a speeding ticket and I have to do some simple calculations in order to silence my mind. The problem is the following: A car (m = 1498.95 kg) is constantly accelerating uphill (15 degrees incline) from...

I do not know if this post belongs here, but it does deal with electronics. I am building a car about 30cm long and 20cm wide. This car has to go a specified distance and must stop as closely as possible to this distance. I have built previous vehicle and found out that there are only two things...

There's a problem I've been working on for a few days that I can't seem to resolve: There is a model train going around a set track with a 2-D accelerometer mounted along the axis of the train. The accelerometer provides the current x/y acceleration values at a frequency of about once...

Homework Statement The diagram below shows a skethc drawn by an accident investigator following a head-on collision between two vehicles. Direction of Travel A (speed 12.5 m/s) and 2400kg -------------> <---------------- Direction of Travel of B, 3600kg, unknown...

Hello everyone, I have a question that I have been unable to find an answer to. I am interested in salvaging a vehicle alternator in an attempt to create a homemade generator. I understand that household electronics' needs are measured in watts, but I can't seem to figure out how to calculate...

As part of my introductory engineering class this year, I have to work with a group to build a small vehicle (no bigger that 2ftx2ftx3ft) that can carry some water up to 250 ft. However, we cannot use any electricity, anything flammable or solid rockets. So right now I'm at a loss as to how to...

As I'm sure we all know, that when you go sailing your fastest speed isn't directly downwind but when you are traveling at an angle to it. This allows sailboats and iceboats to go several times faster than the wind speed that is powering them. But how is it that a vehicle such as...

A vehicle's engine produces 100 hp at 4773 rpm. If the wheel radius is 12 inches, the final drive ratio is 3 and the transmission ratio is 3.00, calculate the tractive force at the wheel, in steady state.

Homework Statement A 4200lb vehicle is cruising down the highway at 65mph when the driver steps on the brake applying a braking force of 2,850lbs Determine the time to stop, assuming uniform deceleration Distance traveled during the deceleration Velocity of the vehicle after 3.2 sec's of...

I understand that these forums probably get flooded with people trying to beat pending cases against them, and I was hoping that I could use some of your brains to help solve a question that has been bothering me. I've never actually taken physics, so any help I could get in this area, could...

if i keep a funnel shaped long tube on the roof of a moving vehicle, will the air going in follow Bernoulli's equation?

Centripetal force, enertia, friction, velocity, and mass; these are the forces I've collected that I need to manipulate to simulate vehicle dynamics. I'm playing around in Adobe Flash working on a vehicle rig for a simple game for self education's sake. Now I don't know anything about...

Homework Statement I have to find the center of mass of any vehicle. Homework Equations These are what I have to make. The Attempt at a Solution Here is what I have thought. I have two solutions :- 1. To find the mass of all the major components and their centers and then...

Hi everyone, We recently were assigned a Variable Velocity Vehicle Project (VVV) in my physics class. The idea is we are supposed to create a vehicle (with 4 wheels) that: 1) That should travel 6.00m and keep moving an additional meter before stopping. In other words, it has to stop at 7...

Homework Statement The Army of the Nation of Whynot has a plan to propel small vehicles across the battlefield by shooting them, from behind, with a machine gun. They've hired you as a consultant to help with an upcoming test. A 100 kg test vehicle will roll along frictionless rails. The...

Hi Experts! I have my own company and we are working on small project for goods movement. I would require your valuable help to achieve this... Brief: A vehicle which can carry mass load and can fly from one point to other. Direction is changable. Which can be controlled. This is manually...

Hi folks, my first post here, looks like a very helpful website though, so i thought i'd share my problem. I'm a mechanical engineering student working on a vehicle that has a zero turning radius system, which is to say (for the purposes of this problem) that it's controlled by 2 drivewheels...

why is a motorcycle more aerodynamically affected than a truck??, I have been lead to believe it is because of the lower density, is that true?? and how can i justify it?? Thanks

Vehicle Safety Features Your task is to identify social issues, such as cost benefit analysis, requiring or arising from the development of safety features for vehicles, to research information about the issues you have identified, and to create a communication product to synthesize your...

Homework Statement Fifteen clowns are late to a party. They jump into their sporty coupe and start driving. Eventually they come to a level curve, with a radius of 31.5 meters. What is the top speed at which they can drive successfully around the curve? The coefficient of static friction...

I have recently come across a few electric motors (donated to me for my school's Technology Club), two from a wheel chair with gear reduction and another power window motor from a car. The power window motor has a worm gear on it of course, which is directly attached to the axle, but can be cut...