- #1

- 469

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I immediately thought of P = p*g*h, where p = density. h is the depth, but this is for gauge pressure. Do I use the formula for absolute pressure P = atmospheric pressure + pgh?

Am I correct in my reasoning?

Thanks.

- Thread starter Soaring Crane
- Start date

- #1

- 469

- 0

I immediately thought of P = p*g*h, where p = density. h is the depth, but this is for gauge pressure. Do I use the formula for absolute pressure P = atmospheric pressure + pgh?

Am I correct in my reasoning?

Thanks.

- #2

- 609

- 0

Yes the absolute pressure under water is [itex] \rho g h + 1atm [/itex]... however, the pressure inside the (uncompressed) lung is 1atm... so the DIFFERENT of the pressue is [itex] \rho g h[/itex]

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