 #1
nicky670
 21
 1
 Homework Statement:

The figure on the right shows a stratospheric balloon
carrying a payload. The density of helium at 1.0 atm and 15 oC
is 0.168 kg/m3 and the density for air is 1.225 kg/m3. The mass
of the balloon (skin without helium) and the payload is 260 kg.
The volume of the balloon at ground level is 300 m3
 Relevant Equations:
 Upthrust?
I have gathered the formula:
F(Bouyant force)  (Mballoon + Mpayload)g  (Mhelium)g = (Mballoon + Mhelium + Mpayload)a
But i can't seem to figure out what is the buoyant force to find a. Or am i mistaking something?
F(Bouyant force)  (Mballoon + Mpayload)g  (Mhelium)g = (Mballoon + Mhelium + Mpayload)a
But i can't seem to figure out what is the buoyant force to find a. Or am i mistaking something?