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Question
An oil drop of mass 'm' falls through a viscous medium. The viscous drag force (F) is proportional to the velocity of the drop. At the instant it begins to fall, the net force that acts on the oil drop is
An oil drop of mass 'm' falls through a viscous medium. The viscous drag force (F) is proportional to the velocity of the drop. At the instant it begins to fall, the net force that acts on the oil drop is
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Solution
The correct option is D mg
At the instant, it begins to fall the velocity will be zero
∴∴ F = 0
Thus only mg acts on it
At the instant, it begins to fall the velocity will be zero
∴∴ F = 0
Thus only mg acts on it
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