An aeroplane gets its upward lift due to a phenomenon described by the

A piece of ice is tied using a string to the bottom of bucket $A$. The bucket is filled with water with ice completely submerged in it. Another bucket $B$ is filled with water and a piece of ice is released in water. It floats on the surface of water (see figure). What would be the impact on the level of water in the two buckets, when ice pieces melt away completely?

A piece of ice is tied using a string to the bottom of bucket $A$. The bucket is filled with water with ice completely submerged in it. Another bucket $B$ is filled with water and a piece of ice is released in water. If floats on the surface of water (see Fig.). What would be the impact on the level of water in the two buckets, when ice pieces melt away completely?