All Questions
5
questions
0
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Will a rocket need the same fuel and energy going 1 g upwards on Earth as a rocket 1 g in space?
Will the gravity of Earth change the result (making the rocket on earth need more fuel and energy than the one in space)? Or it is the same?
user293241
-1
votes
4
answers
131
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Gravitational acceleration of an object towards earth which is not in freefall
This is a hypothetical question, a brain experiment, thought someone might be able to answer it for me, someone who has a good understanding of general relativity etc.
Assume I take an object and ...
16
votes
3
answers
4k
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"To come back to Earth...it can be five times the force of gravity" - video editor's mistake?
I've watched The Truth About Gravity With Professor Jim Al-Khalili | Gravity And Me | Spark where astronaut Chris Hadfield says at 3:55:
To come back to Earth is violent
Then after several seconds ...
- 516
2
votes
1
answer
405
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Shape and orientation of liquid surface in accelerating rocket tank
I have a hard time explaining myself what would be the shape and the orientation of the liquid surface inside a rocket tank during acceleration (while the rocket motor are in operation). an example ...
- 21
1
vote
2
answers
448
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Rockets and distance [closed]
I am trying to create an equation which allows for me to change the aspects of the rocket so i can calculate the distance traveled vertically. My idea is for a rocket that only moves vertically; ...
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