Question
Sat August 04, 2012 By:

in my previous question why are we using the formuka f=v x d x g

Expert Reply
Sat August 04, 2012
This formula is according to Archimeds' law of buoyancy.
According to this law the buoyant force on an object fully or partially immersed in a fluid is equal to the weight of fluid displaced by that object.
So in the question I have taken air as a fluid which the baloon displaces as it is immersed in the fluid.
Thus weight of air displaced = (voulme of air displaced) x (density of air) x (gravitational acceleration)
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