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Gravitational Field

A small air b...

Question

A small air bubble of radius ' r' In' water is at depth 'If. below the water surface. if P is atmospheric pressure 'd' Is density of water and 'I' is surface tension of water then what is the pressure inside the bubble?

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Solution

R.E.F image
$P_{i} = P_{o} + \frac{4 T}{R} + h p g$
$P_{o} =$ Atmospheric Pressure
$\frac{4 T}{R} =$ txcen Pressure
h = depth of $h_{2} O$ of the distance at soap bubble from the
surface of $H_{2} O$
If soap bubble is not surface of $H_{2} O$ then pressure
inside soap bubble in
$P_{i} = P_{o} + \frac{4 T}{R}$

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