1. The conical pivot shown in the figure has angular velocity and rests on an oil film of uniform thickness h. Determine the frictional moment as a function of the angle , the viscosity, the angular...

1. The conical pivot shown in the figure has angular velocity

and rests on an oil film of uniform thickness h. Determine the frictional moment as a function of the angle
, the viscosity, the angular velocity, the gap distance, and the shaft diameter.

2. For water flowing in a 0.1-in.-diameter tube, the velocity distribution is parabolic (see Example 4.2). If the average velocity is 2 fps, determine the magnitude of the shear stress at the tube wall.