Engineering Board Exam Reviewer · Fluid Mechanics · medium
A hot-air balloon displaces 500 m3 of outside air with a density of 1.2 kg/m3. What is the buoyant force acting on it?
- 5.886 kN
- 0.600 kN
- 4.905 kN
- 2.943 kN
Answer
A. 5.886 kN
Solution
B = ρair g V = 1.2(9.81)(500) = 5886 N = 5.886 kN.
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