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As we've seen, astronauts measure their mass by measuring the period of oscillation when sitting in a chair connected to a spring. The Body Mass Measurement Device on Skylab, a 1970 space station, had a spring constant of 606 . The empty chair oscillated with a period of 0.830. What is the mass of an astronaut who oscillates with a period of 2.16 when sitting in the chair?

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