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Capillary Action

For a steady ...

Question

For a steady flow of liquid, the float of the rotameter will remain in a particular position when

A

drag force is balanced by weight of the float and buoyancy

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B

weight of the float is balanced by the drag force and buoyancy force

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C

buoyancy force is balanced by the drag force and weight of the float

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D

drag force and buoyancy together is slightly greater than the weight of the float

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Solution

The correct option is B weight of the float is balanced by the drag force and buoyancy force
Float weight = drag force + buoyancy force

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