Question

During forced exhalation, such as when blowing up a balloon, the diaphragm and chest muscles create a pressure of 72.0 mm Hg between the lungs and chest wall. What force in newtons does this pressure create on the 605 cm2 surface area of the diaphragm

Answer 1

F = 580.75 N

Step-by-step explanation:

The force can be calculated through the following formula:

`F = PA`

where,

F = Force = ?

P = Pressure = (72 mm Hg)(133.322 Pa/1 mm Hg) = 9599.18 Pa

A = Area = (605 cm²)(1 m²/10⁴ cm²) = 0.0605 m²

Therefore,

`F = (9599.18\ Pa)(0.0605\ m^2)`

F = 580.75 N