Determine the drag on a small circular disk of (0.01-mathrm{ft}) diameter moving (0.01 mathrm{ft} / mathrm{s}) through

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Determine the drag on a small circular disk of \(0.01-\mathrm{ft}\) diameter moving \(0.01 \mathrm{ft} / \mathrm{s}\) through oil with a specific gravity of 0.87 and a viscosity 10,000 times that of water. The disk is oriented normal to the upstream velocity. By what percent is the drag reduced if the disk is oriented parallel to the flow?

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