![]() Let's say you have a fairly powerful rear-wheel-drive car, and you are driving around a curve on a wet road. It takes force to make a car change direction - ultimately, the tires and the ground provide lateral force. Laterally - Lateral force is created when the car drives around a curve.It tends to either accelerate or decelerate the car. ![]() Longitudinally - Longitudinal force comes from the torque applied to the tire by the engine or by the brakes.Wheel slip - There are two kinds of contact that tires can make with the road: static and dynamic. By contrast, huge, knobby, off-road tires wouldn't have as high a coefficient of friction on a dry track, but in the mud, their coefficient of friction is extremely high. The coefficient of friction for that same tire in mud would be almost zero. That is one of the reasons why NASCAR race cars can corner at such high speeds. For instance, a NASCAR tire has a very high coefficient of friction when it is driving on a dry, concrete track. The coefficient of friction is mostly a function of the kind of tires on the vehicle and the type of surface the vehicle is driving on. In our case, it relates the amount of traction between the tires and the road to the weight resting on each tire. The coefficient of friction - This factor relates the amount of friction force between two surfaces to the force holding the two surfaces together. When it accelerates, weight shifts to the rear wheels. For instance, when a car makes a turn, weight shifts to the outside wheels. The weight on the tire - The more weight on a tire, the more traction it has. These are the factors that affect traction: Even if you have a NASCAR engine in your car, if the tires won't stick to the ground there is simply no way to harness that power.įor the sake of this article, we'll define traction as the maximum amount of force the tire can apply against the ground (or that the ground can apply against the tire - they're the same thing). The interesting thing about torque is that in low-traction situations, the maximum amount of torque that can be created is determined by the amount of traction, not by the engine.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |