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ChemIsHard
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Homework Statement
A 0.900 g balloon is filled with helium gas until it becomes a 25.0 cm-diameter sphere.
What maximum mass can be tied to the balloon (with a massless string) without the balloon sinking to the floor?
Homework Equations
Fb=VSphere*Pair*Gravity
Fg=Vsphere*Phelium*Gravity
The Attempt at a Solution
I tried to set them equal to each other (so that the net force is 0) and found that...
Vsphere(Phelium-Pair)*9.8-0.0009kg*9.8(mass of ballon)=Mass attachable/9.8
I got 7.5g but that's wrong. Anyone know where I messed up my process?
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