A block of wood weighing 5 N in air,is difficult to fully submerge in a pool of mercury because the buoyant force when fully submerged is
A)less than 5 N.
B)5 N.
C)much more than 5 N.

Question

Quizplus · Accepted Answer

The buoyant force is equal to the weight of the fluid displaced. Since mercury is much denser than wood, the buoyant force when the wood is fully submerged in mercury is much greater than 5 N, making it difficult to submerge.

A Block of Wood Weighing 5 N in Air,is Difficult