A small amount of water is boiled in a 1 -gallon metal can. The can is removed from the heat and the lid put on. As the can cools, it collapses and looks crushed. Explain.
We have to explain the reason regarding the collapsing of the can, when the hot water inside it cools.
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Whenever their is a pressure difference across the wall of the can, net force acts on the wall of the can which is responsible for collapsing the can as it cools, thereby changing its shape.