The device shown consists of a disk that is rotated by .. shaft. The disk is positioned
Chapter 2, Problem 2.38(choose chapter or problem)
The device shown consists of a disk that is rotated by .. shaft. The disk is positioned very close to a solid boundary. .;.etween the disk and the boundary is viscous oil. a. If the disk is rotated at a rate of 1 rad/s, what will be the ratio of the shear stress in the oil at r = 2 em to the shear stress at r = 3 em?b. If the rate of rotation is 2 rad/s, what b the speed of the oil in contact with the disk at r = 3 em? ' If the oil viscosity is 0.01 N s/m2 and the spacingy is 2 mm, what is the shear stress for the conditions noted in part (b)?
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