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Myst · 01-23-2005, 07:44 PM

A lighter-than-air balloon and its load of passengers and ballast are floating stationary above the earth. Ballast is weight (of negligible volume) that can be dropped overboard to make the balloon rise. The radius of this balloon is 6.25 m. Assuming a constant value of 1.29 kg/m3 for the density of air, determine how much weight must be dropped overboard to make the balloon rise 105 m in 15.0 s.

This problems on the MCAT

its driving me nuts
anyone remember how to do this?

01-23-2005, 07:44 PM
Myst Confirmed User Join Date: Feb 2004 Location: Alberta, Canada Posts: 4,707	Who remembers how to do university physics? (pressure/fluids/density) A lighter-than-air balloon and its load of passengers and ballast are floating stationary above the earth. Ballast is weight (of negligible volume) that can be dropped overboard to make the balloon rise. The radius of this balloon is 6.25 m. Assuming a constant value of 1.29 kg/m3 for the density of air, determine how much weight must be dropped overboard to make the balloon rise 105 m in 15.0 s. This problems on the MCAT its driving me nuts anyone remember how to do this? __________________ ICQ: 298-523-037