Consider a Ball of Mass (m) is kept on the top of a Tube of Cross Section “A” and Height “h1”.Now we are supplying a Gas inside the tube having Flow rate(Q).As per the Bernoulli's Principal the ball is moving height “h2”(Distance between the top of the tube and the center of the ball).

Q1.when the ball mass is "m" it is at a distance of "h2". when I increase the ball mass to "m+del(m)" there should be a change in height"h2".Can we get the
relation between the mass of the ball and the height"h2"? For example if I want h2=2mm what will be required mass of the ball?