A spherical solid ball of volume is made of a material of density . It is falling through a liq....

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A spherical solid ball of volume is made of a material of density . It is falling through a liquid of

density . Assume that the liquid applies a viscous force on the ball that is proportional to the
W
square of its speed , i.e., . The terminal speed of the ball is
(1)
(2)
(3)
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