Homework Help: PHYSICS

Posted by DMITRIC on Friday, April 15, 2011 at 11:23am.

A 30 kg. balloon is filled with 100 m to the third power of helium. how much force is needed to hold it down?

PHYSICS - bobpursley, Friday, April 15, 2011 at 12:56pm
bouyancy force = weightairin100m^3-weightHein100m^3

force needed=bouyancy force-30kg*g

how do you get the weight? YOu need to make assumptions about pressure and temperature.

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