Air Resistance, Tyres And Friction :: essays research papers

Dragsters use a combination of large wide tyres or the rear and small shrink tyres on the front this combination is utilize for the following reasonsThe front wheelsThe front wheels are very narrow. This is so a minimum of air rampart or blow affects the draw inster with lower drag meliorate acceleration an in process a better take speed can be achieved all leading to a better pass (race time). Now lets try to understand the concept of air resistance and drag. A basic example is placing your hand out the twineow with your thenar veneering forwards as you are driving your car along at about sixty kilometres per hour. You will feel a smashed wring of the wind (air resistance) pushing back at your hand. Now turn your hand post or so that your little finger is facing the front and your thumb is facing the rear at the same speed. The force of air resistance exerted on your hand is greatly reduced. This force is akin as to that exerted on the front wheels of the dragster.No w dragsters reach speeds of up to 5 hundred kilometres per hour, imagine the force needed to hold your hand against the wind if your palm was facing the front. It would be much easier to hold your hand side on. The same as it would be much easier for the dragsters engine to push the narrow front wheels compared to large ones. Air resistance is a form of grinding (namely fluid friction) a friction from the air, as we know friction is delineate as a force that opposes movement.The formula used to determine silken drag is as follows Drag = 0.5 * rho * Cd * v2 * S Aerodynamic drag is a function of the following rho is the air density, which we cannot change. v2 is velocity squared which is endeavoured to be maximized for the best time and/or pass. S is the frontal or busy sectional area which we want to minimize. I.e. less frontal area meaning that a less significant amount of air resistance impedes the cap speed and acceleration.Cd is the coefficient of drag, which we want to mi nimize. So the two things with which can be worked with or changed, the frontal area and coefficient of drag, both of which need to be to minimise for the best results.Having very narrow front wheels minimizes the frontal area.