Weight of a body in a water column

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SUMMARY

The weight of a body submerged in water is reduced due to the principle of upthrust, which is the buoyant force acting on the object. However, the weight of the water column above the submerged body can exceed the upthrust, leading to a complex interaction between the forces. The discussion emphasizes that while the apparent weight decreases, the total pressure from the water column can create a scenario where the effective weight feels greater due to the surrounding pressure dynamics.

PREREQUISITES
  • Understanding of buoyancy and Archimedes' principle
  • Basic knowledge of fluid mechanics
  • Familiarity with pressure concepts in physics
  • Concept of upthrust and its calculation
NEXT STEPS
  • Research Archimedes' principle and its applications in fluid mechanics
  • Explore the concept of hydrostatic pressure and its effects on submerged objects
  • Learn about the calculations involved in determining buoyant force
  • Investigate real-world applications of buoyancy in engineering and design
USEFUL FOR

Students of physics, engineers working with fluid dynamics, and anyone interested in the principles of buoyancy and pressure in fluids.

AakashPandita
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The weight of a body is less when it is submerged in water, due to the upthrust.
But the weight of the water column above the body can be far more than the upthrust(weight of the displaced water).
So is it not that the weight of a body can increase when it is submerged in water?
 
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AakashPandita said:
The weight of a body is less when it is submerged in water, due to the upthrust.
But the weight of the water column above the body can be far more than the upthrust(weight of the displaced water).
So is it not that the weight of a body can increase when it is submerged in water?

The water above you also pushes on all the water around you, which in turn ends up pushing you up from below (since pressure act in all directions). This push up is always greater than the push down.
 
thank you.
 

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