2. (I1) Buoyant forces are supplied by all fluids (liquid or gas), it's the mechanism that send high altitude balloons all the way up to the stratosphere. For gases, density is given in units of grams/liter (g/L). It is much more convenient than kg/L because gases have such low densities. Here's a table of densities for this problem : Gas Density (g/L) Air 1.225 0.08988 Hydrogen Helium 0.1786 a) If we went outside and filled a balloon with hydrogen so that it occupied a volume of V = 1.00 m3, what would be the net force acting on a balloon (is the net force upward or downward)? b) Repeat part a) but assume we made a Helium balloon instead.

2. (I1) Buoyant forces are supplied by all fluids (liquid or gas), it's the mechanism that send high altitude balloons all the way up to the stratosphere. For gases, density is given in units of grams/liter (g/L). It is much more convenient than kg/L because gases have such low densities. Here's a table of densities for this problem : Gas Density (g/L) Air 1.225 0.08988 Hydrogen Helium 0.1786 a) If we went outside and filled a balloon with hydrogen so that it occupied a volume of V = 1.00 m3, what would be the net force acting on a balloon (is the net force upward or downward)? b) Repeat part a) but assume we made a Helium balloon instead.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter15: Fluids

Section15.4: Archimedes’s Principle

Problem 15.5CE

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