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Homework Statement
Bozo the clown brings an empty birthday balloon with a mass of 0.0120 kg to your party. Bozo fills the balloon with helium of density 0.181 kg/m3. The filled balloon is a perfect sphere with a radius of 0.500 m. Bozo ties the balloon to a rope and holds is so that it is vertical. What is the tension in the rope?
Homework Equations
Ft= tension force
Fb=buoyant force
π=pi
4πr^3=volume of sphere
The Attempt at a Solution
i tried Fnet=0 = Fb-Ft-mg
Ft=Fb-mg=(densityfluid)(Vdisplaced)(g) - (m)(g)
[(4π(.5)^3)(9.8)] - [(.012)(9.8)] ==> Ft=2.6687 N which is obviously not correct, as I'm asking this question.
Any good help is greatly appreciated!
-aea