Why do astronauts feel weightless in orbit?

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SUMMARY

Astronauts experience weightlessness in orbit due to the absence of a normal force acting on them. In a spacecraft orbiting Earth, both the astronaut and the spacecraft are in free fall, moving at the same speed towards Earth. This results in the sensation of weightlessness, as there is no force exerted by the floor of the spacecraft. The phenomenon is a direct consequence of the principles of gravity and motion in a microgravity environment.

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  • Understanding of Newton's laws of motion
  • Basic knowledge of gravitational forces
  • Familiarity with the concept of free fall
  • Awareness of orbital mechanics
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  • Study gravitational forces and their effects in space environments
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parwana
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Why does an astronaut in a spacecraft orbiting the Earth experience a feeling of weightlessness?
 
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parwana said:
Why does an astronaut in a spacecraft orbiting the Earth experience a feeling of weightlessness?
What do you normally feel when you are at rest on earth? What would be different if you were in a spacecraft in orbit?
 
The sensation of weight is really the normal force the floor exerts on you. If you are in orbit, both you and the floor are falling with the same speed towards Earth, so there is no normal force and no weight sensation.
 

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