Archimedes principle states that the buoyant force equals the weight of fluid displaced.
Fresh water has a density of
ρ=1000 kg/m³
Sea water from deep in the ocean has a mass density of ρ=1050 kg/m³.
Average sea water has a mass density of ρ=1030 kg/m³.
Net force to lift the object
=(m-ρv)g
=(92-ρ*0.031)*9.81 N
Do not forget that to "land" the object on the boat, the buoyant force does not apply any more when the object is in the air.
a box of treasure with a mass of 92 kg and volume of 0.031metrecubic lies at the bottom of the ocean.how much force is needed to lift it?
1 answer
1 answer