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The terminal velocity of a iron ball of ...

The terminal velocity of a iron ball of radius `2.0` mm talling through a tank of oil at `20^(@)C` is `6.5cms^(9-1)` .Compute the viscosity of the oil at `20^(@)C` . Density of oil is `1.5xx10^(3)kgm^(-3)`. Density of iron is `7.8xx10^(3)kgm^(-3)`.

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`eta=8.3PI`
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KUMAR PRAKASHAN-MECHANICAL PROPERTIES OF FLUIDS -SECTION - B Numericals
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