The body of a car is suspended on four identical springs. Consider a car with a mass of 1410 kg. This mass is evenly distributed over the four springs. These springs cause the car to oscillate with a frequency of 2.85 Hz when empty. What is the spring constant of one of these springs? Five large people, each with a mass of 115 kg climb into the car. What distance does the suspension of the car drop? What frequency does the car oscillate with now?