The space between two square flat parallel plates is filled with oil. Each side of the plate is 60 cm. The thickness of the oil film is 12.5 mm. The upper plate, which moves at 2.5 metre per sec requires a force of 98.1 N to maintain the speed. Determine : i.the dynamic viscosity of the oil, and ii.the kinematic viscosity of the oil if the specific gravity of the oil is 0.95.

A plate of width 19 cm and length 49 cm is moved at a velocity of 0.07 m/s. The plate is separated from a surface moving in the opposite direction at 0.2 m/s by an oil filled gap of 0.13mm. If the oil has a viscosity of 0.25 Pa.s, determine the force required to move the plate relative to the moving surface. State your answer in N, correct to 2 d.p.

Find the force required to pull a shaft with diameter D, steadily into a sleeve with diameter D, and length L at a velocity of V. The clearance between the shaft and the sleeve is filled with an oil of viscosity μ.

A plate separated by 0.1 mm from a fixed plate moves at 0.10 m/s under a force per unit area of 2.0 N/m2. Determine the viscosity of the fluid between the plates. Give your answer in units of mPaos and round to the nearest whole number.