Forces acting on body placed in meniscus

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    Body Forces Meniscus
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SUMMARY

The discussion focuses on the forces acting on a body placed on the surface of water in a capillary with a diameter of 1 cm, specifically examining the differences between concave and convex menisci. When water is added beyond the capillary height, the meniscus transitions from concave to convex, affecting the buoyant forces acting on the body. The ability of the meniscus to support weight is contingent on its shape, with the concave meniscus generally able to support heavier bodies due to increased surface tension. The discussion also raises questions about the influence of capillary diameter, pressure, and temperature on the characteristics of the meniscus.

PREREQUISITES
  • Understanding of surface tension and its effects on liquids
  • Knowledge of capillary action and meniscus formation
  • Familiarity with buoyancy principles in fluid mechanics
  • Basic concepts of interfacial energy and contact angles
NEXT STEPS
  • Research the effects of capillary diameter on meniscus behavior
  • Study the principles of buoyancy and how they relate to surface tension
  • Explore the impact of temperature and pressure on liquid menisci
  • Investigate applications of meniscus behavior in microfluidics
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Students and professionals in physics, fluid mechanics, and engineering, particularly those interested in capillary action and surface phenomena.

muldi
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I have a question regarding forces in meniscus.

Lets assume we have capillary 1cm in diameter. We pour some water into the capillary.
We will observe concave meniscus. If we add some water (so water level exceed the height of the capillary) we will observe convex meniscus.

Not let's assume we place a body (not heavy one) on the water surface in the center of the meniscus. What forces (strength and direction) will be acting on our body in both cases?

Which meniscus can hold heavier body on the water surface?

Will it change a lot with capillary diameter?

I hope my question is clear.
 
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interfacial energy is not related to canthotaxis; the 'floating' body knows nothing of the contact angle.
 
Does pressure or temperature change the meniscus of water?
 
Can anything change meniscus?
 

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