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The final velocity of the final stage of a multi-stage rocket is much greater than the final velocity of a single-stage rocket of the same total mass and fuel supply. Explain this fact.

The final velocity of the final stage of a multi-stage rocket is much greater than the final velocity of a single-stage rocket of the same total mass and fuel supply. Explain this fact.

Grade:10

1 Answers

Jitender Pal
askIITians Faculty 365 Points
8 years ago
By using a multi stage rocket one can cut the fuel tank which is no use once the fuel in it has been put to use completely. This reduces the effective mass to be carried upward, and with the same amount of fuel, one can attain a higher elevation. This would also increase the velocity of rocket comparative to a single staged one.
Therefore by throwing the mass of fuel tanks one reduces the rocket mass that is to be lifted thereafter, and with smaller inertia the rocket can be easily lifted relative to the single stage rockets.

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