amezcua wrote: ↑
Mon Feb 12, 2018 3:53 pm
Did anyone see the reality tv programme where they got a team of people to go into space but it was all fake and they were fooled intp believing the gravity was engineered to be the same in orbit. ?They had little scientific knowledge and were totally taken in by it . That deserves a rerun . All of it took place without lifting off the ground .
The force of gravity in orbit is about the same as it is on Earth's surface. The International Space Station in orbit experiences about 90% of the gravity it would experience on Earth. So why the experience of weightlessness? Because the station and the astronauts inside it are falling. Falling produces an experience of weightlessness, as in the famous "vomit comet," an aircraft that produces brief periods of weightlessness for astronauts in training by diving. So the reality show was trying to convince the participants that the experience of falling was cancelled?
If the station is falling, why doesn't it fall to earth? Because its lateral velocity ensures that it continuously misses earth. Falling + lateral velocity = orbit. Without the strong gravity it experiences, the station's lateral velocity would take it off into deep space.