• Support PF! Buy your school textbooks, materials and every day products Here!

Calculating density Archimedes principle

  • Thread starter noname1
  • Start date
  • #1
134
0
I have to calculate the density of these 3 objects and these are the values i obtained but now i am confused how i can calculate the density of them.

I know that in chemistry density is mass / volume but in this case i am not sure, can anyone tell me the formula?

thanks in advance
 

Attachments

Answers and Replies

  • #2
69
0
If you know the volume of the sphere then you should be able to use [tex]\rho = \frac{m}{V}[/tex]

If you don't have the volume but have the radius and length of the cylinder then you can work out volume.

If you don't have the radii of the cylinders or their length then get out your ruler =]
 
  • #3
134
0
If you know the volume of the sphere then you should be able to use [tex]\rho = \frac{m}{V}[/tex]

If you don't have the volume but have the radius and length of the cylinder then you can work out volume.

If you don't have the radii of the cylinders or their length then get out your ruler =]
we dont have any measurements of the objects, thats why i find it complicated
 
  • #4
ideasrule
Homework Helper
2,266
0
I see that you've already calculated the force of buoyancy on the objects. Fb=rho*g*V where rho is the density of water, so you can easily calculate the objects' volume.
 

Related Threads on Calculating density Archimedes principle

Replies
5
Views
3K
  • Last Post
Replies
7
Views
3K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
13
Views
3K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
5
Views
6K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
6
Views
537
Top