Rocket's forces and acceleration

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Homework Help Overview

The problem involves a rocket with a specified mass and thrust force, requiring the calculation of resultant force, initial acceleration, and average acceleration after a certain speed and time. The subject area pertains to dynamics and forces acting on the rocket.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the forces acting on the rocket, particularly questioning the role of gravity. There are inquiries about the calculation of resultant force and requests for clarification on the original poster's attempts.

Discussion Status

The discussion is ongoing, with participants encouraging the original poster to share their work for further assistance. Some guidance has been offered regarding the need to show attempts to facilitate help.

Contextual Notes

There is a noted emphasis on the importance of making an attempt at the problem before seeking help, reflecting the forum's learning-first approach.

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Homework Statement



A rocket has a mass of 3.04x10(6)kg. It takes off vertically with a thrust force of 3.40x10(7)N.

Find:

(a) The resultant force.
(b) The initial acceleration
(c) After reaching a speed of 2390ms(-1) after 150seconds, the average acceleration.

Homework Equations



/

The Attempt at a Solution



I'd really appreciate someone to provide some help with this, I'm quite stuck :(

Thanks :)
 
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What other forces are acting on the rocket?
 
jegues said:
What other forces are acting on the rocket?

Gravity.
 
So why are you having trouble calculating the resultant force? Did you even try the problem... Next time make an attempt at the solution otherwise you're not going to learn anything.
 
jegues said:
So why are you having trouble calculating the resultant force? Did you even try the problem... Next time make an attempt at the solution otherwise you're not going to learn anything.

Jegues,

Of course I attempted it, but I do not understand it. Hence why I am asking for assistance.

Thank you.
 
If you attempted it and are having troubles, show us your work.

We will help you work through your sticking points.
 
jegues said:
If you attempted it and are having troubles, show us your work.

We will help you work through your sticking points.

Hi Jegues,

I seem to have worked out that, I'm going to check the answers and if it's wrong I'll reply to this thread to see where I've gone wrong.

Thanks!
 
No problem.
 

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