A metal sphere of volume V has a terminal velocity 2m/s in glycerine. The terminal velocity of sphere of volume 8V in glycerine will be-:
a)4m/s
b)8m/s
c)16m/s
d)32m/s
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This formula leads me to v=k.r^2=k.V/r
which gives me v=k.V
and it give me v=16m/s which is wrong, the answer is 8m/s ?
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