Torque of Viscous Forces on a Disc Figure shows a disc D of

Last updated: 6/25/2023

Torque of Viscous Forces on a Disc Figure shows a disc D of diameter d connected to an axle placed on a fixed horizontal surface There exist a thin layer of a lubricant of viscosity n between disc and ground of thickness t Find the external torque required to rotate the disc at a uniform angular velocity 0 t D 4