Two metal blocks are attached by a cable as shown in the figure below and are submerged at rest near the surface of a lake. If the volumes are V1 = 2.1 m3 and V2 = 1.1 m3, what is the total buoyant force on the two blocks?

Answer 1

Vt = V1 + V2 = 2.1 + 1.1 = 3.2 m^3.
Buoyant force = Wt. of the water displaced:

Fb=3.2m^3*1000kg/m^3*9.8N/kg=31,360 N. =
Buoyant force.