how to find fluid displacement and buoyancy?

Question

The liquid Density is 2.4kg/L

The object weight is 20.Kg and its density is 4.6kg/L

How do i solve the buoyant force and its new weight while in the liquid?

Answer 1

Hi Josiah J.,

you attack this problem sequentially (as you do any problem!).

1) From the object's weight and density, calculate its volume.

2) That volume times the fluid density is the bouyant force on the object.

3) Its new weight is the original weight minus the bouyant force.

P.S. Always think about your data. This is a whopping liquid density, maybe methylene dibromide, if an organic liquid. High health hazard!

-- Cheers, -- Mr. d.