Calculating Velocity of a Rocket: Balancing Mass and Velocity

[lasha1]

To calculate velocity of the rocket: v1=m2/m1 × v2 where v1 and m1 is mass and velocity of rocket and v2 and m2 is the mass and velocity of fuel.
Problem: m1 is saying that you have to decrease the mass of the rocket and increase the mass of fuel. But if you decrease the mass of rocket, the mass of fuel automatically deacrease.
How this situation works. I mean how to choose masses

 

[Merlin3189]

I'm not sure where you're getting this equation from, nor even what your symbols mean. Is v1 really Δv, the change in velocity? Does m1 include m2? Or is the total rocket mass really m1+m2 at the start and m1 when the fuel is spent?

I think you need to look up rocket equation and sort it out before you try to draw any conclusions about it.

 

[NatSusan]

Well, it's all about finding a balance between the mass of the rocket and the mass of the fuel. As you mentioned, if you decrease the mass of the rocket, the mass of the fuel will also decrease. But the key is to find the right ratio between the two.

First, you need to consider the overall weight of the rocket and the amount of thrust needed to launch it. This will give you an idea of how much fuel you will need. From there, you can adjust the mass of the rocket accordingly to achieve the desired velocity.

It's also important to keep in mind that as the fuel is being burned, the mass of the rocket will decrease, so you may need to make adjustments during the flight. This is why rocket engineers carefully calculate the mass ratio and constantly monitor it during launch.

Ultimately, it comes down to careful planning and calculations to determine the right balance between the mass of the rocket and the mass of the fuel. It's a delicate process, but when done correctly, it can lead to a successful launch and achieving the desired velocity.