A $50 - \mathrm { cm } ^ { 3 }$ block of wood is floating on water, and a $50 - \mathrm { cm } ^ { 3 }$ chunk of iron is totally submerged in the water. Which one has the greater buoyant force on it?
A) the wood
B) Both have the same buoyant force.
C) the iron
D) It cannot be determined without knowing their densities.

Question

Quizplus · Accepted Answer

The buoyant force is equal to the weight of the displaced fluid. Since the iron is fully submerged, it displaces more water than the floating wood, resulting in a greater buoyant force on the iron.

A 50−cm350 - \mathrm { cm } ^ { 3 }50−cm3

A $50 - \mathrm { cm } ^ { 3 }$