What does “Archimedes' principle” actually mean in Mechanical Properties of Fluids, and why does it matter for JEE?
a submerged body feels an upward buoyant force equal to the weight of the fluid it displaces.
In simple words: a submerged body feels an upward buoyant force equal to the weight of the fluid it displaces. Getting Archimedes' principle clear matters because JEE questions on Mechanical Properties of Fluids usually test this idea directly, not just a formula you memorised.
Key point
Archimedes' principle
Common mistake
comparing the object's total weight instead of its average density with the fluid's.
Memory tip
floats if average density < fluid density; sinks if greater.
Tap to watch or see it right here — the app stays open (it only opens a quick search if nothing embeddable is found).