[Goala]

Hi guys:

I put my piece of iron in water in a graduated cylinder and the water volume rose by 5cm. Also, when I took the mass of my iron it weighed 80g.

How can I know the density of my iron?

Thanks!

[Dan]

What is the relationship between density, mass and volume?

[Goala]

d=m/V

But aren't we using Archimede's Principle in this case?

[Dan]

d=m/V

Good. You know the mass of the iron. What is the volume of the iron?

But aren't we using Archimede's Principle in this case?

No, this is to do with the famous Eureka story involving Archimedes - this is not the same as Archimedes principle, which deals with buoyancy.

[Goala]

Ah, ok super!

Ok, the volume is the difference between the two readings which is 5mL. So the denisty is 80/5 which is 16g/mL

[Borek]

Ok, the volume is the difference between the two readings which is 5mL. So the denisty is 80/5 which is 16g/mL

Something is wrong - density of iron is about half of this number.

[Goala]

Ok, the volume is the difference between the two readings which is 5mL. So the denisty is 80/5 which is 16g/mL

Something is wrong - density of iron is about half of this number.

I made random numbers up because I was trying to understand the concept