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Mechanics

Hot goIITian

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20 Sep 2007 20:03:48 IST

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where does this mass go.?

None

Q-23,chapter center of mass ,liner momentum, collision.....hcv I

if astron..looses thair mass where does this mass go.?so that total mass remains same....therefore no effect on the velocity of space ship.

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Abhishek Ray

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Joined: 1 Apr 2007

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20 Sep 2007 21:09:15 IST

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if you read the question carefully it says "far removed from all other material objects"

so the mass is always conserved
the mass lost by the astronauts is gained by the spaceship
therefore the total mass of the whole system remains the same.

therefore there is no change in velocity

alok mittal

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20 Sep 2007 21:44:20 IST

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since asto are doing slimming exrcises thir body must be sweating

ayesha arora

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22 Sep 2007 11:16:05 IST

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is that tru.... ???

waterdemon

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Joined: 11 Jun 2007

Posts: 1048

23 Sep 2007 11:21:37 IST

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No Ayesha ,

I am not agreeing with the above given answers.

The Astronauts are in spaceship in outer space where the

gravity is "zero".

We Know that Weight of the body can be given as :

W = mg

In Outer Space there is no Gravitational force due to

which the mass of the closed system remains the same

irrespective of gain or loss in mass.

So , The Weight of the spaceship remains the same as

the mass of the astronauts don't count.

So the mass is conserved but "Not because the mass lost

by the astro's is gained by the Ship" but because "the

Mass of the ship remains Constant as weight of astro's

in the outer space will be = Zero"

Hope you find it useful.

plZ do rate me if useful.

Cheers !!!!!@@@@!!!!!

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