As we have seen, astronauts measure their mass by evaluating the period of oscillation when sitting in a chair joined to a spring. The Body Mass Measurement Device on Skylab, a 1970s space station, had a spring constant of 606 N/m. The empty chair oscillated having a period of 0.823s.
Determine the mass of an astronaut who oscillates with a period of 2.11s when sitting in the chair?