Finding the Density of a Solid Object in Water

[BuBbLeS01]

Homework Statement

A solid object has a weight of 17.22 N. When it is suspended from a scale and submerged in water, the scale reads 5.18 N. Find the density of the object (use ρwater = 1000 kg/m3).

Homework Equations

p = m/v

The Attempt at a Solution

I don't know how to figure this out without having the volume? Or does it have something to do with buoyant forces??

 

[BuBbLeS01]

If I use the buoyant force equation...
Fb = Po * Vo * g
then solve for V?

 

[Shooting Star]

What is Po? If you use Archimedes' Principle, you'll get it immdtly. Refer to your other post. That's why I asked you to state it, at least.

 

[BuBbLeS01]

Po is density of the object.

 

[Shooting Star]

The reduction in force is equal to the upward buoyant force, which I have shown how to find in your other post.