Answer: The metal rim gets heated to fix it on to a cart because metal rims are made slightly smaller. On heating, the rim expands and fits on to the wheel. Then on cooling, the rim contracts and fits slightly on to the wheel.
Does metal rim expands on heating?
The metal rim is made slightly smaller than the wooden wheel. On heating, the rim expands and fits onto the wheel.
What happens to iron rim on heating?
When the iron rim is heated, it expands and will have the same size as wooden wheels. When water is poured, the rims become cool and get compressed. Thus it can take the shape of the wooden wheel and gets fixed on the wheels firmly.
What is a metal rim?
Metal rim is made slightly smaller than the wooden wheel. On heating rim expands and fits into wheel. Cold water is then poured over rim, which contracts and fits tightly onto the wheel.
When water is poured over a hot metal rim then it will?
Answer: 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.
Why is the metal rim heated before fitting it into cart wheel?
A blacksmith heats the metal rim to fix it onto a cart wheel because a metal rim is made slightly smaller. On heating, the rim expands and fits onto the wheel. Then on cooling, the rim contracts and fits tightly onto the wheel.
What happens when a heated metal cools down?
The process involves heating steel to a lower temperature to reduce some of the excess hardness. The metal is then allowed to cool in still air which results in a tougher and less brittle steel.
What will happen if you heat a metal rim a nothing will happen to the rim B the rim would expand C the rim would contract d the rim would first expand and then contract?
Answer: On heating, metals undergo expansion and contract to their original size on cooling. Therefore, a metal rim that is fixed on the wooden wheel is a little smaller in size. On heating the metal rim, it expands and then it is fixed on to the wooden wheel.
Why does metal expand when it is heated?
The expansion (or contraction) of any material is due to the kinetic energy of its atoms. When a material is heated, the increase in energy causes the atoms and molecules to move more and to take up more space— that is, to expand. This is true of even a solid such as a metal.
When cold water is poured over a hot iron rim it?
When cold water is poured over a hot iron rim it contracts.
What is iron rim?
Iron rim is made slightly smaller than the wooden wheel. The rim is usually heated before fixing into the wooden wheel, because on heating the iron rim. expands and fits onto the wooden wheel. contracts and fits onto the wooden wheel. no change in the size takes place.
Why do iron rim is heated before fixing on a wooden wheel?
Solution: Iron rims are heated before they are fixed on the wooden wheel, to ensure a tight fit, the tyre is made slightly smaller in diameter than the wheel. As the tyre is first heated due to which it expands it is then fitted on the wheel.
Why use metal rims in wooden wheels?
Answer Expert Verified
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.
Why is a metal rim made slightly smaller than the wooden wheel?
So, when it is heated it clogs easily into the wheel and then when it cools it fixes itself very tightly over the wheel giving it life. This is the reason why metal rim is always made slightly smaller than the wooden wheel, the metal rim is heated, upon heating the ring expands and fits into the wheel.
How does a metal rim fit with a comparatively large wooden wheel?
A metal rim is heated so that it expands and can be fitted over the wooden wheel. when the metal rim cools, it contracts and grips the wheel firmly.
