Question

a piece of wood if left underwater, comes to the surface. Explain the reason

Answer 1

Explanation:

a piece of wood left under water, comes to surface. ... Density of wood is much smaller compared to density of water. That is why it floats on the surface of water and if immersed, the upthrust acting on the wooden piece will be greater than its weight pulling it downwards. So, it will come to the surface ultimately.

Answer 2

Answer:

I think

A piece of wood if left underwater, comes to the surface because the wood absorb the water completely and the weight if wood become half of it total weight.