Fluid Mechaniks Doubt....

A satellite revolves round the Earth. Air pressure inside the satellite is maintained at 76 cm of mercury. What will be the height of the mercury column in a barometer tube in 1m long placed in the satellite?

10 Answers

71
Vivek @ Born this Way ·

I think it should be 1 m.

1
rishabh ·

i guess it is 76 cm itself.
as far as i remember there is no 'g' term in the height formula

1
Abhishek Das ·

no :p

11
CARLOS ESPIRIDIÓN ·

actually the mercury level will not rise only.....because pressure difference is zero....as pgh here g=0.

71
Vivek @ Born this Way ·

My answer isn't right? then what is the answer?

11
CARLOS ESPIRIDIÓN ·

whom r u asking and how hav u got 1m ?

71
Vivek @ Born this Way ·

Asking the original asker.

11
CARLOS ESPIRIDIÓN ·

@vivek how is it 1m?

71
Vivek @ Born this Way ·

I think so because it is given that "Air pressure inside the satellite is maintained at 76 cm of mercury" but at the same time the mercury is in weightless condition, So pressure will certainly act but there is no force or pressure due the weight of the mercury column to balance that. So it will rise upto maximum height possible.

That's independent explanation. Need comment

11
CARLOS ESPIRIDIÓN ·

hmm.... that can also be the reason ..... :D

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