In a falling-ball visco met er, a s t ee l ball 1,2 mm in d iam

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Question:

In a falling-ball viscometer, a steel ball 1,2 mm in diameter is allowed to fall freely in a heavy fuel oil having a specific gravity of 0,96. Steel weighs 101 kN/m3 If the ball is observed to fall 350,3 mm in 6,0 s,calculate the viscosity of the oil.