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The space between two coaxial cylinders of radius a and 2a and length l is filled with a liquid of coefficient of viscosity n. The inner cylinder is stationary and the outer cylinder is being rotated with constant angular speed w about its axis. The orque required is |
| Answer» The space between two coaxial cylinders of radius a and 2a and length l is filled with a liquid of coefficient of viscosity n. The inner cylinder is stationary and the outer cylinder is being rotated with constant angular speed w about its axis. The orque required is | |