A recreational (open) hot air balloon (i.e., Pinside is approximately Poutside) has a volume of 2219 m3 when fully inflated. The total weight of the balloon, basket, ballast and pilot is 2009.0 N (452 lbs). By how much must the density of the air in the balloon be smaller than that of the surrounding atmosphere in order to keep the balloon floating level near the ground?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
6) A recreational (open) hot air balloon (i.e., Pinside is approximately Poutside) has a volume of 2219 m3 when fully inflated. The total weight of the balloon, basket, ballast and pilot is 2009.0 N (452 lbs). By how much must the density of the air in the balloon be smaller than that of the surrounding atmosphere in order to keep the balloon floating level near the ground?
The volume of hot air balloon when fully inflated is V = 2219 m3.
Assume the total weight of the balloon, basket, ballast and pilot is W1 = 2009.0 N.
Assume the density of the air inside the balloon is denoted by ρi.
Assume the density of the air outside the balloon is denoted by ρ0.
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