Hydraulics and Fluid Mechanics in ME
The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film)

μπ²NR²/60t
μπ²NR⁴/60t
μπ²NR/60t
μπ²NR³/60t

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Hydraulics and Fluid Mechanics in ME
The kinematic viscosity is the

Product of absolute viscosity and mass of the liquid
Ratio of density of the liquid to the absolute viscosity
Product of absolute viscosity and density of the liquid
Ratio of absolute viscosity to the density of the liquid

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Hydraulics and Fluid Mechanics in ME
When an ideal fluid flows past a sphere

lowest pressure intensity occurs at rear stagnation point
highest intensity of pressure occurs around the circumference at right angles to flow
lowest pressure intensity occurs at front stagnation point
total drag is zero

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