Table of Contents
How is ISS gravity calculated?
So, rEarth+ISS = (6.37 × 106 m) + (4 × 105 m) = 6.77 × 106 m. Equation 7 is now adapted to Equation 9 to take this extra distance into account and Equation 10 is the calculation of this gravitational field on the ISS, gISS.
How are astronauts weightless in space?
The astronauts, the ISS itself and other objects in Earth orbit aren’t floating, they are actually falling. So, as they accelerate towards the Earth, the Earth curves away beneath them and they never get any closer. Since the astronauts have the same acceleration as the space station, they feel weightless.
Is it true that an astronaut is weightless in space explain your answer?
(B) An astronaut orbiting the Earth does feel weightless because there is no ground or normal force to counteract the force of gravity. Thus, the astronaut is falling. However, since the astronaut is also moving forward super fast, he/she continuously falls around the Earth rather than crashing into the Earth.
How can an object be considered weightless in the ISS?
Earth-orbiting astronauts are weightless for the same reasons that riders of a free-falling amusement park ride or a free-falling elevator are weightless. They are weightless because there is no external contact force pushing or pulling upon their body. In each case, gravity is the only force acting upon their body.
How much percent does an astronaut grow in space?
Astronauts in space can grow up to 3 per cent taller during the time spent living in microgravity, NASA scientists say. Therefore, if an astronaut is a 6-foot-tall (1.8 meters) person, he or she could gain as many as 2 inches (5 centimetres) while in orbit, says the Scientific American.
How do we float in space?
We float in space because there is very little gravitational force acting on them. Gravity is a force that is caused by the attraction of objects with mass. In space, you are very far from Earth’s center of gravity (other planets have gravity as well), so it doesn’t pull very hard, and we basically float around.
Why astronauts get taller when they are in space?
Astronauts get a bit taller in space because of the decompression of the disks of the spinal column. The disks are slightly compressed when one is living on Earth, thanks to the effects of gravity. In space, the disc expands and the spine lengthens, as there is near-zero gravity, and the astronaut is taller.
What is the tallest an astronaut can be?
Height could be no more than 5 feet 11 inches because of limited cabin space available in the Mercury space capsule being designed. After many intense physical and psychological screenings, NASA selected seven men from an original field of 500 candidates.