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A small ball (mass m) falling under gravity in a viscous medium experiences a drag force proportional to the instantaneous speed u such that F_{drag} = ku. Then the terminal speed of the ball within the viscous medium is:

Option: 1

\frac{k}{mg}


Option: 2

\frac{mg}{k}


Option: 3

\sqrt[]{\frac{mg}{k}}


Option: 4

None of these


Answers (1)

best_answer

Weight - Upthust = Drag Force

V_{T} = \frac{mg - F}{k}

But no information is given regarding the upthrust.

Posted by

jitender.kumar

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