Question

metal bar and ring experiment.
the Metal ball slips through the metal ring easily at room temperature.
when the metal ball is heated, can it go through the metal ring!
what happen when it cool down to room temperature?​

Answer 1

As we know whenever any metal is heated it usually increases in size that varies from material to material which is called coefficient of of linear expansion hence the metal ball when it's heated will increase in size and it can't go through the metal ring .