The buoyant force on a hot air balloon can be calculated using Archimedes's principle, which states that the buoyant force equals the weight of the displaced fluid. In this case, with a displaced fluid mass of 2800 kg and an acceleration due to gravity of 10 m/s², the buoyant force is determined by the equation F = ma, resulting in a force of 28,000 N. It is important to note that the weight of the hot air balloon does not factor into the buoyant force calculation, but it must be subtracted to find the net force acting on the balloon.
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PHart111 said:Homework Statement
I'm trying to find the buoyant force on a hot air balloon. The mass of the displaced fluid is 2800 kg and the acceleration is that of gravity, (let's say 10 m/s^2).
Homework Equations
F=ma
The Attempt at a Solution
I think that you can just multiply these together to find this, or do you have to subtract the weight of the hot air balloon from it as well.
Thank you
What is the exact problem you are trying to solve? The buoyant force is the upward force exerted by the surrounding fluid (the air)--it has nothing to do with the weight of the balloon. If you want the net force on the balloon, then you'd need to subtract the weight of the balloon (and anything attached to it).PHart111 said:I think that you can just multiply these together to find this, or do you have to subtract the weight of the hot air balloon from it as well.