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Slowing as they go around the corner is what most drivers did in the race, but Chastain chose secret option number three: add more turning force that isn't coming from the friction between the tires and the track. You can decrease your acceleration (as most drivers do), start losing mass very quickly (like throwing out car seats as if you are on Wacky Races) or take the corner wider. Fortunately, there are several ways to make this centripetal force (and thus turning) achievable, as you have probably already spotted in the equation. If your force is too low, you will spiral out of the circle, either making a much larger circle or crashing into a wall.Īs mentioned earlier, the force is created by the friction between your tires and the track, which is fine for most road users but not for anybody who wishes to take a corner at insane speeds to win a race without flying off the track. The force necessary to keep you moving along in a circular motion is equal to your mass times your velocity squared, divided by the radius of the imaginary circle you are making ( F = m v 2/r). If the track is sloped towards the inner curve, this will also help, but let's not complicate things too much by going into that. Well, during a normal race you (a boring person who is unwilling to ram the walls) rely on the friction between your tires and the road to create a 'centripetal force' and turn the car.

Professional racers