What is the buoyant force exerted on the balloon in air

Is this a correct interpretation of Archimedes Principle for this application?

A balloon is filled with helium (density = .02 kg/m^3) and has a volume of .009 m^3. What is the buoyant force exerted on the balloon in air
(density = 1.3 km/m^3)?

Fb = (1.3 km/m^3)x (.009 m^3) x (9.80 m)

= .115 N

Thanks

Answers and Replies

Doc Al
Mentor
Yes. Archimedes' Principle says that the buoyant force on an object equals the weight of the displaced fluid.

SGT
Nitpick! Mass is measured in kg, not km. The latter is a measure of distance.

Ya.. Eng67, u'r units are all wrong
Unit for density: $$kg/m^3$$
Unit for gravity: $$m/s^2$$

Thanks for the help Guys. I just typed in Km instead of Kg.