Question

Using drag measurements, it has been experimentally determined that humpback whales have an overall body density of 1045 kg/m^3. Surface ocean water density is 1020 kg/m^3. A particular juvenile specimen was measured to have a mass of 12000 kg.

(a) How many litres of water does the whale displace when it is in the ocean?

V =  L

(b) What is the total buoyant force on this specimen?

F???? =  N

(c) What is the apparent weight of this specimen?

W??? =  N

(d) What is the Reynolds number for a whale carcass falling to the bottom of the ocean with a terminal speed of 0.1 m/s? (Assume that the whale can be modelled as having an average drag-related diameter of 3.5 meters.)

Re =

Answer 1