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Dhruv Gupta Grade: 11

Please solve my problem.

A rocket is ejecting 50 g gas at a velocity of 400m/s.Find the accelerating force of the rocket?

7 years ago

Answers : (1)

Gokul Joshi AskiitiansExpert-IITK
42 Points

Dear Dhruv,

In variable mass systems this force is called Thrust Force which the ejecting particles put on the original system and is equal to vreldm/dt where vrel is relative speed of ejecting partiles wrt original system. If you calculate dm/dt from vrel, you get dm/dt = ρAvrel where ρ is density of gas and A is area of cross section from where gas is ejecting. Anyway the question is ill formed. I would advise you to stick to standard books and not source your questions from doubtful sources and waste your time.

Please feel free to post as many doubts on our discussion forum as you can.we will get you the answer and detailed  solution very  quickly. All the best.

Askiitians Experts,
Gokul  Joshi

7 years ago
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