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← ScienceWhich outcome results when hydrodynamic lubrication fails within spindle bearings?
A)Increased friction and heat production✓
B)Reduced fluid film stiffness
C)Elastohydrodynamic lubrication mode onset
D)Enhanced damping and vibration dissipation
💡 Explanation
Increased friction and heat result when hydrodynamic lubrication fails because shear stresses, under high viscosity conditions, undergo viscous dissipation, therefore leading to thermal energy rather than fluid separation; lower friction results under stable conditions.
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