Which of the following relationship is valid for the equilibrium position of the float in a rotameter ?(where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)

Which of the following relationship is valid for the equilibrium posit

1.	Which of the following relationship is valid for the equilibrium position of the float in a rotameter ?(where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)
A.	Df + Bf = Wf
B.	Df = Bf + Wf
C.	Df + Bf + Wf =0
D.	none of these
Answer» B. Df = Bf + Wf

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Which of the following relationship is valid for the equilibrium position of the float in a rotameter ?(where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)

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