An iron ball of radius 0.3 cm falls through a column of oil of density 0.94g/cm3. It is found to attain a terminal velocity of 0.5 cm/s. Determine the viscosity of the oil. Given that the density of iron is 7.8g/cm3.
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Kindly refer to the link for similar query.
https://www.meritnation.com/ask-answer/question/the-terminal-velocity-of-a-copper-ball-of-radius-2-0-mm-fall/physics/2033907
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