Q: An astronaut whose weight on the Earth is 600 N experiences weightlessness on International Space Station orbiting around the Earth. It means that
(a)acceleration of the astronaut is zero
(b)normal reaction of the space-station floor on the astronaut is zero
(c)gravitational pull of Earth on the astronaut is zero
(d)space station applies a centrifugal force on the astronaut
Correct Answer: (b)
The correct answer is (b): normal reaction of the space-station floor on the astronaut is zero. Subject: Science & Technology | Sub-topic: Space Technology & Astronomy