The body of a 1261 kg car is supported on a frame by four springs. The spring constant of a single spring is 1.54 x 10 to the 4th N/m. Four people rinding in the car have a combined mass of 263 kg. When driven over a pothole in the road, the frame vibrates and for the first few seconds the vibration approximates simple harmonic motion. What is the period of vibration of the car in units of s?
4 spring are in combination.