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Very Short Answer Type Question:Why does a blacksmith heat the metal rim to fix it on a cart wheel? - Science

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Short Note

Very Short Answer Type Question:
Why does a blacksmith heat the metal rim to fix it on a cart wheel?

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Solution

 A blacksmith heats the metal rim to fix it onto a cart wheel because a metal rim is made slightly smaller. On heating, the rim expands and fits onto the wheel. Then on cooling, the rim contracts and fits tightly onto the wheel.

Concept: Effect of Heat on Solid, Liquid and Gases
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