Steel on steel or steel on glass?

In summary, the conversation discusses the concept of elasticity and its application to collisions between different materials. It is mentioned that a substance is considered completely elastic if it can return to its original size and shape after being deformed, and this is not often observed in nature. In the context of collisions, a completely elastic collision is one in which the sum of the kinetic energies of the objects remains the same before and after the collision. Based on this definition, it is determined that steel on steel is more elastic than steel on glass because the glass will break and not retain its original shape.
  • #1
dg_5021
80
0
which collision of marbles is more elastic, steel on steel or steel on glass?
 
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  • #2
That looks an awful lot like a homework problem where you were expected to just look up the answer!

Do understand what "elastic" means?
 
  • #3
I don't know what elastic means?
 
  • #4
A substance is said to be completley elastic, if it can retain it's original size and shape after being deformed. Everything we observe in nature are not completely elastic. In the present context, a completely elastic colission refers to a one in which the sum of the kintetic energies of the colliding objects remains the same before and after the collission
 
  • #5
so then steel on steel is more elastic because it can retain it's original size and shape after being deformed and steel on glass won't because the glass will break. Am I right?
 

Related to Steel on steel or steel on glass?

1. What is the difference between steel on steel and steel on glass?

Steel on steel refers to two pieces of steel rubbing against each other, while steel on glass refers to a piece of steel rubbing against a piece of glass. The main difference is the material being rubbed against, which can affect the friction and wear properties.

2. Which combination, steel on steel or steel on glass, is more durable?

This depends on the specific application and the type of steel and glass being used. Generally, steel on steel tends to be more durable because both materials are harder and have a lower coefficient of friction compared to steel on glass.

3. Can steel on steel or steel on glass cause damage to either material?

Both combinations can cause damage over time due to friction and wear. However, steel on glass is more likely to cause damage to the glass due to its lower hardness compared to steel.

4. How does the surface finish of steel and glass affect the friction between them?

The surface finish of both materials can greatly impact the friction between them. Rougher surfaces tend to have higher friction due to increased contact area, while smoother surfaces have lower friction due to reduced contact area. In general, a smoother surface finish on both materials will result in lower friction and wear.

5. Can lubrication help reduce friction between steel and glass?

Yes, lubrication can greatly reduce friction and wear between steel and glass. It acts as a barrier between the two materials, reducing the direct contact and allowing for smoother movement. However, the type of lubricant used should be compatible with both steel and glass to avoid any damage to either material.

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