Question

which type of change occurs on fitting an iron rod rim on wooden wheel? explain.​

Answer 1

Answer:

On heating the metal rim, it expands and then it is fixed on to the wooden wheel. After cooling, metal rim contracts and gets fixed firmly to the wooden wheel. This is how a metal rim is fixed on a wooden wheel.

Explanation:

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Answer 2

For fixing the metal rim on a wooden wheel of a cart, the metal rim is made slightly smaller than the wooden wheel. On heating, the rim expands and fits onto the wheel. Cold water is then poured over the rim, which contracts and fits tightly onto the wheel.

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