Question

While pulling bucket from well bucket full of water immersed fully in water appears to be weight less why

Answer 1

this is because of the bouyant force or bouyancy which acts againts the gravitational pull of the earth in this case and makes the bucket feel weightless

Answer 2

It’s because of upthrust (also called buoyancy). You may have heard of a guy called Archimedes (he yelled “Eureka” when he got in the bath once), he discovered a law of physics that we now call Archimedes principle, this law is:

Any object, completely or partly put in fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object.

This is why the bucket seems weight less.

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