Calculating the Depth for 1 atm Gauge Pressure in Fresh Water

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SUMMARY

The discussion centers on calculating the depth required for a diver to experience a gauge pressure of 1 atm in fresh water. The formula used is gauge pressure = pgd, where p is the density of fresh water, g is the acceleration due to gravity, and d is the depth. The initial calculation incorrectly used a density of 1 kg/m³, leading to an erroneous depth of 10130 m. The correct density of fresh water is 1000 kg/m³, resulting in the accurate depth of 10 m.

PREREQUISITES
  • Understanding of gauge pressure and its formula
  • Knowledge of the density of fresh water (1000 kg/m³)
  • Familiarity with the acceleration due to gravity (10 m/s²)
  • Basic algebra for solving equations
NEXT STEPS
  • Review the concept of gauge pressure in fluid mechanics
  • Learn about the properties of fluids, specifically density variations
  • Explore the implications of pressure at different depths in various fluids
  • Study real-world applications of pressure calculations in diving and underwater exploration
USEFUL FOR

This discussion is beneficial for students studying physics, particularly those focusing on fluid mechanics, as well as divers and professionals involved in underwater activities who need to understand pressure dynamics.

rasen58
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Homework Statement


Approximately how deep into water must a diver dive to reach the point where the gauge pressure is 1 atm. (1 atm = 1.013 x 10^5 N/m^2) (assume fresh water)

Homework Equations


gauge pressure = pgd
density of fresh water p = 1 kg/m^3

The Attempt at a Solution


pgd = (1 kg/m^3)(10 m/s^2)(d) = 1.013 x 10^5 N/m^2
d = 10130 m

But the answer is actually 10 m. So what did I do wrong?
 
Physics news on Phys.org
Confirm your figure for water density. A cubic meter is a pretty big container!
 
Oh wow, I forgot that density of water is 1000 kg/m^3.
Thanks.
 

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