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A ball bearing of radius of `3mm` made of iron of density `7.85g cm^(-3)` is allowed to fall through a long column of glycerine of density `1.25gcm^(-3)`. It is found to attain a terminal velocity of `2.20cms^(-1)`. Determine the viscosity of glycerine in centipoise. `(` Take `g=10m//s^(2))`

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6000
`Ans. 6000`
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