PPT Slide
rseawater = 1025 kg.m-3 (NB: rwater = 1000 kg.m-3)
Newton's Second Law of Motion (17th Cent.): F = m . g
(recall, m = mass = volume x density; g = acceleration)
Archimedes' Principle or "Eureka Law" (-3rd Cent.):
weight (volume) of an object equals weight (volume) of water displaced
Iceberg vs. seawater: volice * rice * g = voldisplaced water * rwater * g.
So, rice/rwater=voldisplaced water/volice
Thus, volume ratio of displaced water/ice equals 0.9 !
meaning that 90% of an iceberg is below sealevel, whereas 10% is above sea level.