Question

If a person’s body has a density of 995 kg/m³, what fraction of the body will be submerged when floating gently in (a) freshwater? (b) In salt water with a density of 1027 kg/m³?

Answer 1

Part a)

When body is partially submerged in fresh water then net force due to buoyancy must be counterbalanced by weight.

Part b)

When body is partially submerged in salt water then net force due to buoyancy must be counterbalanced by weight.