Would really appreciate if someone can break this down for me. The answer is A, but I’m not quite sure why.
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Hi
In glass 1 & 2, there would no more extra weight since glass 1 only contains water and glass 2 has cork in it, which is floating; that means the weight of the cork is uplifted by the buoyant force of water.
However in glass 3, the steel ball is totally immersed, it is at the bottom of it, that means the buoyant force water couldn’t uplift the weight of the steel ball which would add the total weight of the glass 3 when measured.
so, F3> F2=F1
P = F/A where A is constant since the size of glass are the same
So P3>P2=P1