Question

Explain how a metal rim slightly smaller than a wooden wheel can be fixed on it.​

Answer 1

Answer:

The metal rim is always made slightly smaller than the wooden wheel. The metal rim is heated. On heating, the rim expands and fit onto the wheel. Cold water is then poured over the rim. Due to cooling the metal rim contracts and fits tightly onto the wheel.

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Answer 2

Explanation:

The metal expands in heating and contrast in cooling. When the metal is heated, it expands and is very easy to fix it in the wood. After that, it was cooled to fix tightly