Concept explainers
It is easy to breathe when snorkeling with only your face beneath the surface of the water, but quite difficult to breathe when you are submerged nearly a meter, and nearly impossible when you are more than a meter deep (even if your snorkel tube reaches to the surface). Figure out why, and explain carefully.
To Explain: It is very difficult for someone to breathe inside the water.
Explanation of Solution
Introduction:
The fluid pressure is a pressure at any point inside the fluid due to weight of fluid. The pressure applied by the atmosphere of earth is known as atmospheric pressure. The magnitude of pressure applied by the atmosphere at the sea level is
The variation of pressure with depth is:
Where,
Snorkeling tube is a type of plastic tube or rubber tube which is fitted in the swimmer's mouth for taking breath under water.
As swimmer goes inside the water and depth increases, the pressure acting on body also changes. The variation of pressure with depth is:
From above equation, pressure increases with depth
Therefore, it is very difficult for chest to expand as the force acting on chest increases with depth. According to data, human lungs can operate only up to an external pressure of
Conclusion:
Thus, it is very difficult to breathe after depth of
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