Question

Why metal rim is made slightly smaller than the wooden wheel

Answer 1

Hey dear!!
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As we know that solids expand on heating and contract on cooling.

When a metal rim is attached to a wooden wheel, the rim is heated in order to fix it on the wheel.

Thus, the metal rim is made slightly smaller than the wooden wheel.

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Hope helped!!

Answer 2

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 rims expands............the metallic rim is slightly smaller in used is slightly smaller in diameter than the wheels . on heating the rim expand.