Question

how are iron rims mounted on wooden cart wheels ??????

Answer 1

by heating the iron rims as they expand on heating and get mounted on the wheel and after cooling they contract and sticks with the wheel firmly.

Answer 2

Answer:

Expansion and contraction is used to fix a iron rim on a wooden wheel. normally, the rim is made slightly smaller than the wooden wheel. First, the rim is heated and it expands. After the rim is fitted on the wheel, to fix it tightly we pour cold water on it and it contracts.