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An example of variable mass system is _____

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in Physics – Class 11 by (74.2k points)
An example of variable mass system is _____

(a) A car moving

(b) A rocket taking off

(c) A bicycle moving

(d) A man walking

I had been asked this question in examination.

My doubt is from Newton’s Second Law of Motion topic in division Laws of Motion of Physics – Class 11

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Correct choice is (b) A rocket taking off

To elaborate: In case of a rocket taking off, the mass of the fuel is large and cannot be neglected. As the rocket starts moving, a large amount of fuel is getting burnt out from the nozzle, hence the total mass decreases. Hence it is a variable mass system.

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