As weve 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 rm s space station had a spring constant of 606 nm.
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Astronaut body mass measurement. If the force constant of the spring is 2200 nm her mass is 65 kg and the amplitude of her oscillation is 16 cm what is. Using slammd astronauts can accurately measure body mass with the help of newtons second law of motion fma force is equal to mass times acceleration. The body mass measurement device on skylab a 1970s space station had a spring constant of 606 nm. Using an instrument called the space scale the velocities of a target object and a reference mass are measured. But astronauts still have mass which they can measure to determine what their weight on earth would be and to let medical researchers track changes in body mass due to deconditioning in orbit. What is the astronauts mass given that the force constant of the bmmd is 3000 nm and the period of oscillation is 091s.
A practical high precision method for measuring the mass of an astronaut under microgravity conditions is pro posed. Measuring mass on a space station in 1973 nasa put in orbit the space station skylab and its experiments included a careful monitoring of the health of the crew. The empty chair oscillated with a period of 0889s what is the mass of an astronaut who oscillates with a period of 215 s when sitting in the chair. Here on earth it would be called body weight and would be measured by weighing a person on scales. Firstly the astronaut has to wrap their legs and body around the device as seen in andrés photo. An astronaut uses a body mass measurement device bmmd to determine her mass.
The empty chair oscillated with a period of 0848 s. Nasas space linear acceleration mass measurement device slammd used to measure the mass of iss astronauts. One important quantity was the body mass of the astronauts. An astronaut uses a body mass measurement device to measure her mass. Russia came up with a slightly different solution called the body mass measurement. Currently crews on board the space station use two devices to calculate their weight.
To better observe the process skylab carried three mass measuring devices two small ones experiment m074 for measuring the intake and outgo of each astronaut and a large one experiment m172 with an oscillating chair designed for daily monitoring of the weight of the astronauts.
Gallery of Astronaut Body Mass Measurement
