Question

A plank of wood with a density of ρw = 650 kg/m3 and volume V = 0.65 m3 is floating in the ocean. (Assume the density of salt water is ρs = 1100 kg/m3) What is the volume of the block that is submerged?

A) 0.23 m3
B) 0.38 m3
C) 0.42 m3
D) 0.51 m3
E) 0.56 m3

Answer 1

Wt of log=wt of displaced water
Or 650x0.65=1100xS, S=vol of submerged part.
S=650x0.65/1100=0.384m^3