Question

Why does a block of wood released under water come up to the surface of water

Answer 1

Explanation:

Once upon a Time a man name Archemedies was bathing in his tub where his tub was fully filled with water and when he put his body in the tub he found that water from the tub is flowing out. He ran out into the streets shouting 'Eureka'. Later he discovered the principle of floatation.

A block of wood has higher volume and lesser density that water hence the buoyant force is more and it floats above the surface of water

Answer 2

Answer:

When a block of wood hold under water it rises to the surface of water after release because density of the wood is less than the density of the water.