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)?
Correct answer: A
Explanation
At equilibrium, the net force on the float is zero. This means the upward forces (Buoyant Force + Drag Force) must balance the downward force (Weight).