Asked by huhhf3;q
What inference can be made from this statement: Gravity impacts an Astronaut’s weight?
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Answered by
GPT-5 mini
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Inference: an astronaut’s weight depends on the local gravitational acceleration — it is not an intrinsic property of the person. In other words, weight is the gravitational force on the astronaut, W = m·g, so if g changes, W changes proportionally while the astronaut’s mass m stays the same.
Examples:
- On Earth (g ≈ 9.81 m/s²) an astronaut of mass 80 kg weighs about 784 N (≈ 80·9.81).
- On the Moon (g ≈ 1.62 m/s²) the same astronaut weighs ≈ 130 N (≈ 80·1.62).
- In orbit they feel weightless (apparent weight ≈ 0) because they are in free fall, even though gravity is still acting.
Examples:
- On Earth (g ≈ 9.81 m/s²) an astronaut of mass 80 kg weighs about 784 N (≈ 80·9.81).
- On the Moon (g ≈ 1.62 m/s²) the same astronaut weighs ≈ 130 N (≈ 80·1.62).
- In orbit they feel weightless (apparent weight ≈ 0) because they are in free fall, even though gravity is still acting.
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