# What will be the effect on the water level? [duplicate]

I came upon this question recently while studying about buoyancy. It goes like this:

If an iron block is covered with ice and floats in a tub of water, what will be the change to the water level when the ice melts and the iron submerges completely?

According to me the the water level should go up because the iron block will displace more water when it submerges. But, the answer is that the level will remain the same. I did not get the reasoning nor the logic behind it. Please explain why the level will remain the same. This question is driving me crazy.

• I've evaluated OP's problem and I find that the water level $\textit{goes down}$ after the ice melts completely. I suggest the answerers to kindly take this into consideration. – Ajay Mohan Dec 7 '19 at 10:06
• Chill although water expands when freezes but just assume the water level in the container is already at the brim initially... 😎 – user6760 Dec 7 '19 at 15:13