what is the difference between 'all wheel drive' and '4 wheel drive'? all the wheels on a car equal 4 wheels.
81945
<Four wheel drive, 4WD, 4x4, all wheel drive, and AWD are terms used to describe a four-wheeled vehicle with a drivetrain that allows all four wheels to receive power from the engine simultaneously. While many people think exclusively of off-road vehicles, powering all four wheels provides better control on slick ice and is an important part of rally racing on mostly-paved roads.\nFour wheel drive (4WD or 4x4 for short) was the original term, often used to describe truck-like vehicles that required the driver to manually switch between a two wheel drive mode for streets and a four wheel drive mode for low traction conditions such as ice, mud, or loose gravel. The "all wheel drive" term (AWD for short) was invented to distinguish vehicles that are capable of driving all four wheels on normal roads without causing poor control and excessive tire and drivetrain wear. Most modern AWD vehicles do not continuously drive all four wheels, but instead switch from two wheel drive to four wheel drive automatically as needed.
133235
A complex machine is nothing more than one or more simple machines working together.  Try the site below for ideas on how to present all the simple machines (from wheels to gears) you used in constructing your car.  Good luck.
15501
We use wheels and axles for all kinds of cool stuff. Cars, trucks, bicycles, and trains all use wheels and axles. Also, gears, which are a lot like wheels and axles, are used in all kinds of machines. Pulleys are, too. Look at these Wikipedia pages if you need more information.
320801
Starboard...side. I think that you have asked a good question. However, all boats do not have a steeringwheel on the right side. Some boats are classified as a 'dual,or a center console. I worked for a harbour on a towing crew, and we always towed the boats, to dock them starboard side. I will watch to see just what some other people may have to say. Good luck!!.....Have a nice day!
833474
What is what?? the magnitude?? the torque??\n\nfinish your questions
242192
To answer this question you must first understand what drive is. Drive gear as a standard had a 1:1 ratio meaning that for each 1 revolution of the engine the output shaft of the transmission turned 1 time. Overdrive, most ratios end up at about .7:1 or for each 3/4 rpm the output shaft of the transmission would turn 1 turn. What this means is that engine RPM(revolutions per minute) would drop further allowing car to consume less fuel for the distance covered. As far as when you should use it it depends on the car, engine size, and load conditions. Most newer cars you can leave in overdrive(automatics) all of the time and they will take care of themselves. If you are towing and you may want to run in regular drive instead of overdrive to prevent the constant shifting in and out of overdrive but this is something that you will develop a feel for. I hope that this helps.Just remember Overdrive is there to reduce engine speed, save fuel, and extend engine life
145481
Yes, there is a difference.  To me, drive indicates a forceful, yet not necessarily focused, pushed toward achieving a goals.  Determination, on the other hand, implies that one is making focused and carefully calculated moves toward achieving one's goal.  In simple and squishy terms, drive is ugly and crude; determination is beautiful and graceful.  Those with drive are like scorpions in a bottle.  They don't mind what they destroy on their way to the top of the bottle.  Those with determination, however, are more like a flock of lovely birds flying in sync toward a single destination.
67480
your right about 'RR'.all those tyres are used by the team before the race and are slightly worn or beded in.on an oval NASCAR track,each tyre will wear differently so they are all marked as a set.FR=front right.FL=front left.RR=rear right.RL=rear left.hope this helps!!
723260
Question 1:\n\nTorque is a force applied at a distance,\nT = F * r\nWhere T is the torque, F is the force, and r is the radius the force is applied away from the center or rotation.\n\nT = 40 Newtons * .15 meters = 6 Newton meters\n\nA torque causes an angular acceration,\nT = alpha * I\nwhere T is the torque,  alpha is the angular acceleration, and I is the rotational inertia ("moment of inertia").\n\nAn angular acceleration relates to a linear acceleration,\nalpha = a / R\nwhere alpha is the angular acceleration, a is the linear acceleration, and R is the radius of rotation (the wheel's radius in this case).\n\nThe linear acceleration can be found by finding the change in linear velocity with respect to time,\na = delta v / delta t\na = 2.25 m/s / 3 s = .75 m/s^2\n\nalpha = .75 m/s^2 / .5 meters = 1.5 radians per second^2\n\nT = alpha * I \n--> I = T / alpha\nI = 6 Nm / 1.5 rad/s^2 = 4 kg m^2\n \nDo your own homework next time (like on question 2).\nhttp://sln.fi.edu/qa97/spotlight3/spotlight3.html
1110024
*********************************************************************\n\n3 wheels on a tricycle\n\n**********************************************************************
842462
Drive ratio=24/15=1.6\nIn other words 1.6 rev. of A \nwill cause 1 rev. of C\nThis would mean an acceleration\n of 1.6rad/sec on wheel A will cause \nan acceleration of 1rad/sec on wheel C\n130 rev/min\n=130*2Pi rad/min\n=130*2Pi*1/60 rad/sec\nV=u+at\n130*2Pi/60=0+1*t\nt=260*22/7*1/60sec\n=13.6 sec
1132271
From experiece I can tell you I don't like front wheel drive in small cars with short wheel bases. When the brakes are applied, especially on slippery surfaces, they have a tendecy to go into a revolving skid because they are so front heavy, In other words, they have a tendency to revolve around the heavier front end. A rear wheel drive car is better balanced . A front wheel drive car has very good traction though becase of so much weight over the drive wheels.
779727
combustion? your question i super vague. the drive shaft applying torque created by the engine to the wheels which turn making the car move? you might want to be more specific. and if you look at wikipedia.org under combustion engine you might find what your looking for
756380
Firstly, let me point out to you which answers are wrong and which answers are right. Otherwise you'll be just as confused as you were to begin with.\n\nThe first answer is confused. The second and third answers have no idea of what their talking about. The other answers are correct.\n\nHere's why the first answer is confused:\n\nSpeed and velocity use exactly the same units. \nSo it is perfectly acceptable to say "a car travels around a sharp curve a 60 km/hr". \n\nRestated, what we are saying is that the car moves around a curve at constant speed of 60 km/hr. The statement above does not include directional information. \n\n(However, suppose we said "a car travels around a sharp curve with constant velocity of 60 km/hr". Then, clearly this would be wrong. Velocity does change as it goes around the curve.)\n\nSecondly, let us recall some basic facts of 'Uniform Circular Motion' \nAn object that travels with Uniform Circular Motion has:\n- constant speed \n- changing velocity  \n- acceleration towards the centre\n\nNow, the car in question displays uniform circular motion. This is so even though we are considering a partial circular path.\n\nSo, we can use this import formula (you should memorise it) \n\n    ar = v ^2 /r\n\nThis relates the centripetal acceleration, ar, to the radius of the circle (or in the case of a partial circle, the radius of curvature), r.\n\nFrom the formula you can see that a sharp bend, i.e. a small r, will give a larger value of centripetal acceleration compared to a gentle bend, i.e a large r. \n\nSubstitute v=60 and different values of r into the formula above to verify this.
275462
Gear ratio, or in a car, final drive ratio is basically the number of times the tires rotate in relation to the number of times the drive shaft or axles rotate.\nLet's say in a rear wheel drive car you have a rear end gear of 3.91:1 This would sound out as three point nine one to one.\nThe drive shaft will rotate 3.91 times for every 1 complete rotation of the tires.\n\nThe transmission also has gears, and each speed has a ratio, 1st gear, or Low being the lowest ratio. Usually somewhere in the 2.78:1 neighborhood. 2nd, or Low2 would be a bit higher, say 2.02:1 3rd gear, or D would be something like 1:60.1 and 4th or Overdrive would be 1:1 or an equal rotation of 1 to 1.\nOf course these are random numbers, and several things will factor in for actual ratios in a trans, and/or rear end.\nFront wheel drive cars also have a final drive gear, and would be similar in ratio to the rear end ratio of a rear whel drive car or truck.
232758
Normally when car manufacturers are talking about just HP, they are talking about the horsepower the engine makes at the flywheel. Wheel HP on the other hand is the measurement of horsepower at the wheels. Between the flywheel and the drive wheels, horsepower is lost in components such as the transmission and the differential. So the HP an engine makes at the flywheel is always going to be higher than the horsepower reading at the wheels.\nAnd when it all comes down to it, the horsepower made at the wheels is what really moves the car.
507916
Don't confuse PHYSICAL drives with LOGICAL drives. A single physical drive can be broken up into many Logical drives.  Just because you see "Drive C" and "Drive D" doesn't mean you have two physical drives.\n\nChances are, both C and D are on the same drive. When you removed it, both dissappeared.