Physics

What is the net vertical force on this balloon if it is let go? Mass of the rubber 1.50g. Ignore the volume of rubber

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1. There has to be something given.

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2. Thats what I was thinking, let me see if i missed something

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posted by Help!
3. Oops! I forgot that it was a 2 part question.
Part 1:
Calculate the bouyant force on a 2.00 L helium balloon.
Volume:2.00 L
Helium's density: 0.18x10^-3
FB=density*gravity*volume=> 3.53x10-3 N

other then these numbers nothing else was given for part 2(the part i need help in).

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posted by Help!

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