Anthony T. answered • 03/09/21
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This is an application of Archimedes principle. The buoyant force on an object is equal to the weight of the fluid displaced. The fluid in this case is air.
To find the weight of the air displaced, we have to utilize the formula mass = Density x volume and multiply the results by the acceleration of gravity.
weight of air displaced = 1.225 kg/m3 x 0.0743 m3 x 9.8 m/s2 = 0.892 N which is the buoyant force exerted on the person.
Anthony T.
The exact result you get depends on the value of air density and g that use.03/09/21