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

Question

Quizplus · Accepted Answer

The buoyant force when fully submerged in mercury is more than 5 N because mercury has a much higher density than water, and the buoyant force is directly proportional to the density of the fluid. Since the block of wood weighs 5 N in air, the buoyant force exerted by the denser mercury would be greater, making it difficult to fully submerge the block.

A Block of Wood Weighing 5 N in Air, Is