Question

A scuba diver and her gear displace a volume of 67.8 L and have a total mass of 71.1 kg .

A ) . What is the buoyant force on the diver in sea water?

B) . Will the diver sink or float?

Answer 1

Solution :-

Buoyance = weight of displaced water,

Density of seawater, ρ = 1.025x10³ kg/m3

     B = W' = M'g = V.ρ.g

                = 67.8x10^-3 x1.025x10³x9.8

                = 681 N

Weight of teh diver + gear,

            W= 71.1x9.8 = 696.78 N

As the weight W > Upthrust, B

the system will sink