Question

why and how is artificial gravity created in a space craft?

Answer 1

In space, it is possible to create "artificial gravity" by spinning your spacecraft or space station. When the station spins, centrifugal force acts to pull the inhabitants to the outside. This process could be used to simulate gravity.
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Answer 2

It can be possible by spinning the Spacecraft or space station .When it spins centrifugal force acts to pull the Habitants inside.