What Forces are at Play on a Rock Sinking at Constant Speed in Water?

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SUMMARY

A rock sinking in water at a constant speed experiences three forces: gravity, water resistance, and buoyancy. Gravity pulls the rock downward, while water resistance acts upward against the motion. Buoyancy, which is the upward force exerted by the fluid, also plays a crucial role in maintaining the rock's constant speed. Understanding these forces is essential for grasping the principles of fluid dynamics and buoyancy.

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  • Understanding of Newton's laws of motion
  • Basic principles of fluid dynamics
  • Concept of buoyancy and Archimedes' principle
  • Knowledge of forces and their interactions
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  • Study Archimedes' principle in detail
  • Explore the effects of varying fluid densities on buoyancy
  • Learn about drag force and its calculation in fluid dynamics
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Students of physics, educators teaching fluid dynamics, and anyone interested in the principles of forces acting on objects in fluids.

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If a rock is sinking in water with constant speed..

how many forces are working on it?
 
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johann1301 said:
If a rock is sinking in water with constant speed..

how many forces are working on it?

What are *your* thoughts? What is the context of your question?
 
my thoughts are that there are only two; gravity and water resistance, but my physics book says its three; gravity, water resistance AND buoyancy. i don't understand how buoyancy works in this situation... anyone?
 

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