- #1
Xiao10
- 10
- 0
Came across this question in the Flying Circus of Physics,
My initial assumption was that this would be where the water pressure becomes greater than the maximum pressure difference that can be created between the lungs and atmospheric pressure.
a search revealed the normal pressure difference while breathing to be just around 500Pa, which would make the depth very small. Given that the maximum volume of air that the lungs can hold is around 6 times the normal capacity (this is dubious), then the maximum pressure difference would be around 3kPa, however this still gives an answer which is around 3 times less than that given.
I wonder where my mistake is?
My initial assumption was that this would be where the water pressure becomes greater than the maximum pressure difference that can be created between the lungs and atmospheric pressure.
a search revealed the normal pressure difference while breathing to be just around 500Pa, which would make the depth very small. Given that the maximum volume of air that the lungs can hold is around 6 times the normal capacity (this is dubious), then the maximum pressure difference would be around 3kPa, however this still gives an answer which is around 3 times less than that given.
I wonder where my mistake is?