A wooden block contains some nails so that its average density is exactly equal to that of water.If it is placed in a tank of water and released from rest when it is completely submerged,it will
A)rise to the surface.
B)sink to the bottom.
C)remain where it is released.

Question

Quizplus · Accepted Answer

Since the wooden block has the same average density as water, it will neither rise to the surface nor sink to the bottom. It will remain where it is released because the buoyant force acting on it will be equal to its weight, resulting in zero net force and no motion.

A Wooden Block Contains Some Nails So That Its Average