Why metal rim that has to be fitted on a wooden wheel is heated before being fixed?

Question 6 Explain the reason. 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.

1. Why is the metal rim of cart wheel heated before fitting on the wooden wheel?
2. Why does a blacksmith heat the iron rim for a wooden wheel before putting it into place?
3. What happens to the materials when they are heated or cooled How is this scientific knowledge applied while fitting an iron rim on a wooden wheel?
4. Why the metal rim is made slightly smaller that is used for a wooden wheel?
5. How is a metal rim fixed on a cart wheel?
6. How is it possible to fit the metal rim over a cart wheel tightly?
7. How is the metal rim fitted on to the wooden cart wheel?
8. Why do blacksmiths heat metal?
9. How is this scientific knowledge applied while fitting an iron rim on a wooden wheel?
10. What happens on heating metal rim?
11. What happens to the metal rim when it gets heated?
12. What happens to a metal when it is cooled?
13. How metal rim slightly smaller than a wooden wheel can be fixed on it?
14. How does a metal rim fit with a comparatively large wooden wheel?
15. Why the size of iron rim that is fixed on a wooden wheel is little less than the wooden wheel?

Why is the metal rim of cart wheel heated before fitting on the wooden 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.

Why does a blacksmith heat the iron rim for a wooden wheel before putting it into place?

When the iron rim is heated, it expands. It is fixed on the wooden wheel in its expanded state. When the temperature decreases, the rim again contracts, thus fitting completely onto the wheel.

What happens to the materials when they are heated or cooled How is this scientific knowledge applied while fitting an iron rim on a wooden wheel?

Heating the steel rim causes it to expand enough to fit over the wooden wheel easily. The steel rim is then cooled rapidly and it contracts to fit the wheel tightly and hold everything together without nails or screws.

Why the metal rim is made slightly smaller that is used for a wooden wheel?

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.

How is a metal rim fixed on a cart wheel?

Correct Answer: Option (A) heating metal rim. On heating the metal rim, it expands and fits around the wheel.

How is it possible to fit the metal rim over a cart wheel tightly?

Answer: 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.

How is the metal rim fitted on to the wooden cart wheel?

Ans: 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.

Why do blacksmiths heat metal?

| Why Do Blacksmiths Heat the Iron? Blacksmiths put solid hard iron into a forge and heat it at a temperature high enough to soften it. ... Because if you don't, the iron will turn solid hard as before, and changing its shape then would be impossible.

How is this scientific knowledge applied while fitting an iron rim on a wooden wheel?

To make the rim fit the wheel, the rim is uniformly heated in a fire causing expansion (increase in size). The expanded rim (which is bigger in size) is then easily fitted around the wooden wheel. ... The contraction caused by the cooling of water decreases the size of the rim making it tightly fit the wooden wheel.

What happens on heating metal rim?

The metal rim is heated. On heating, the rim expands and fit onto the wheel. ... Due to cooling the metal rim contracts and fits tightly onto the wheel.

What happens to the metal rim when it gets heated?

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.

What happens to a metal when it is cooled?

As the length decreases, volume also decreases which leads to an increase in the density of the metal bar. Hence, when a metal bar is cooled, length decreases, density increases but the mass remains the same.

How metal rim slightly smaller than a wooden wheel can be fixed on it?

How is the metal rim fixed on the 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.

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.

Why the size of iron rim that is fixed on a wooden wheel is little less than the wooden wheel?

The rim is usually heated before fixing into the wooden wheel because on heating the iron rim. (d) expands first, then on cooling contracts and fits onto the wooden wheel. ...