In a falling-ball viscometer, a steel ball 1.6 mm in diameter is allowed to fall freely in
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In a falling-ball viscometer, a steel ball 1.6 mm in diameter is allowed to fall freely in a heavy fuel oil having a specific gravity of 0.94. Steel weighs 77 kN/m3. If the ball is observed to fall 250 mm in 10.4 s, calculate the viscosity of the oil.
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