Gauge Pressure at Depth in Water
Easyhydrostaticspressure
What is the approximate gauge pressure 5 m below a water surface open to the atmosphere? Use ρ = 1,000 kg/m3 and g = 9.81 m/s2.
- A4.91 kPa
- B9.81 kPa
- C49.1 kPa
- D98.1 kPa
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Answer: C. 49.1 kPa
Hydrostatic gauge pressure is p = ρgh = (1,000)(9.81)(5) = 49,050 Pa = 49.05 kPa, approximately 49.1 kPa.
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