Question

Explain how a metal rim is fixed around the wooden wheel of a cart.

Answer 1

Answer:

Metals expand on heating and contract on cooling. This expansion and contraction of a metal is a reversible change. The metallic rim used is slightly smaller in diameter than the wheels .On heating the rim expands. And can easily lie on the wheels. When the rim cools, it contract and press tightly on to the wheels.

Answer 2

Answer:

FIRST THE IRON RIM GETS HEATED UP THEN IT EXPANDS AND THEY FIT IT INTO THE THE WOODEN RIM AND IT GETS COOLED DOWN

Explanation:

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