Question

why does a blacksmith heat the metal rim to fix it on a cart wheel​

Answer 1

• 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.

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Answer 2

Answer:

The heat makes the metal expand so it fits onto the wheel

Explanation:

Then when it cools down the metal fits tightly and doesn't come off easily