Consider newtonian, incompressible, steady, laminar flow of liquid rotating in annular gap between horizontal concentric cylinders. the inner cylinder is stationary, and the outer cylinder rotates at constant speed. a) derive an expression for the velocity profile in the annular gap (vθ). b) derive an expression for shear stress in the annular g

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.