A small spherical ball of radius $r$, falling through a viscous medium of negligible density has terminal velocity '$v$'. Another ball of the same mass but of radius $2 r$, falling through the same viscous medium will have terminal velocity:

Question

$4 \mathrm{v}$

$2 \mathrm{~V}$

$\frac{v}{4}$

$\frac{\mathrm{v}}{2}$

Solution

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