Buoyant forces and temperature

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SUMMARY

The buoyant force acting on an aluminum sphere submerged in water remains largely unchanged with an increase in temperature, provided that the volumetric expansion of the aluminum matches the density decrease of the water. The buoyant force (F) is defined by the equation F = (M - m)g, where M is the mass of the displaced water, m is the mass of the sphere, and g is the acceleration due to gravity. This relationship indicates that if both materials expand uniformly, the net buoyancy effect is negligible.

PREREQUISITES
  • Understanding of buoyancy principles
  • Knowledge of volumetric expansion
  • Familiarity with density concepts
  • Basic physics equations related to forces
NEXT STEPS
  • Research the effects of temperature on material properties, focusing on aluminum and water
  • Study Archimedes' principle in detail
  • Explore the relationship between temperature, density, and buoyancy
  • Learn about the implications of thermal expansion in engineering applications
USEFUL FOR

Students of physics, engineers, and anyone interested in the principles of buoyancy and thermal dynamics.

kmkindig
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I was just looking through an internet site and there was this question... Will the buoyant force acting on on aluminum sphere submerged in water increase or decrease if the temperature of both is increased. Why? This question just sparked my interest because i am not a physics major but now a little about physics and didnt know the answer. Thanks!
 
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If the volummetric expansion of the aluminum is the same as the density decrease of the water, then there is no nearly no change in the buoyancy, because the buoyancy force F is equal to the mass of the water M the sphere displaces minus the mass of the sphere m, times g: F = (M-m)g.
 
Hey that helps out a lot! Thank you very much and that conquers my curiousity. Thanks again
 

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