What is the buoyant force exerted on the balloon in air

  • Thread starter Eng67
  • Start date
21
0
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
 

Doc Al

Mentor
44,803
1,064
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.
 
186
0
Ya.. Eng67, u'r units are all wrong
Unit for density: [tex] kg/m^3 [/tex]
Unit for gravity: [tex] m/s^2 [/tex]
 
21
0
Thanks for the help Guys. I just typed in Km instead of Kg.
 

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