A certain man has a mass of 85.0 kg and a density of 995 kg/m3 (exclusive of the air in his lungs).
(a) Calculate his volume.
(b) Find the buoyant force air exerts on him.
(c) What is the ratio of the buoyant force to his weight?
(buoyant force / weight)
Fb=density (of substance) x Volume (of object) x g
density of air=1.2 kg/m3
The Attempt at a Solution
Fb=(1.2 kg/m3) x (9.8) (.0854)
and then for part c
1.004/ (9.8 x 85=833)=.00121
For some reason this is incorrect. Does anyone see why?