How Do You Calculate Thrust and Resultant Force for Saturn V Rockets?

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Homework Help Overview

The discussion revolves around calculating thrust and resultant force for the Saturn V rockets, specifically during lift-off. Participants are examining the application of physical principles related to rocket propulsion.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Some participants suggest using conservation of momentum and Newton's laws as potential approaches. Others express uncertainty about how to begin solving the problem and question the clarity of the problem statement.

Discussion Status

The discussion is ongoing, with participants sharing initial thoughts and approaches. Some guidance has been offered regarding the use of impulse and momentum, but no consensus or clear direction has emerged yet.

Contextual Notes

There are indications that the problem may lack clarity, as noted by participants questioning the vagueness of the initial question. Additionally, the original poster has not provided specific details on their attempts to solve the problem.

pluke100
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Guys got this question and couldn't do it.

The Saturn V rockets which launched the Apollo space missions had the following specifications:(look at attached pic)


Caulculate i) the force(thrust) produced at lift
ii) the resultant force acting on the rocket at lift-off
 

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Looks like you should use conservation of momentum and Newton's laws. What did you do?

Also, the problem is a little vague, maybe you could clear it up a little.
 
i haven't got an idea what to do with that :S
 
pluke100 said:
i haven't got an idea what to do with that :S
Change in momentum is the impulse, which for a constant force is the product of force times the duration of the force. Find the change in momentum of the gas ejected by the rocket in some small time interval Δt and go from there.
 

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