# Need help finding the density in this particular problem

1. Nov 28, 2014

### Alexandra7

1. The problem statement, all variables and given/known data
A particular object weighs 313 N in air and 254 N when immersed in alcohol of density 0.7 g/cm3. What are the volume and the density of the object?

2. Relevant equations
D=m/vL

3. The attempt at a solution
I found the volume by: 313-254 N to find the actual weight, then I divided it by 9.8 to get it into Kg, then I used the density formula to solve for volume which gave me 8.6L

So the volume is taken care of! 50% of the problem done :)!

As for the density, I'm confused because I thought I would just plug in my known values but it doesn't work. Can someone please guide me as to how I would find the density of this object? I greatly appreciate it!

2. Nov 28, 2014

### Orodruin

Staff Emeritus
Can you show what you do and get when you say "just plug in my values".

3. Nov 28, 2014

### Alexandra7

6.02kg from the two forces/ 8.6L that I found out from part a) =D

but it doesn't :[

4. Nov 28, 2014

### Orodruin

Staff Emeritus
Which force represents the total weight of the object? What you are solving for above is the density of the alcohol.

5. Sep 1, 2017

### jacksonlee

Can you please solve the second part pleaseee, need it for an assignment thanks

6. Sep 1, 2017