A cross section of a rotating bearing is shown. The spherical member rotates wit

Question

A cross section of a rotating bearing is shown. The spherical member rotates with angular speed omega, a small distance, a , above a plane surface. The narrow gap is filled with viscous oil having mu = 1250 cp. Obtain an algebraic expression for the shear stress acting on the spherical member. Evaluate the maximum shear stress that acts on the spherical member for the conditions shown. (Is the maximum necessarily located at the maximum radius?) Develop an algebraic expression (in the form of an integral) for the total viscous shear torque that acts on the spherical member. Calculate the torque using the dimensions shown. (Sry resolution is bad, R = 75 mm, omega = 70 rpm, a = .5 mm, Ro = 20 mm)

Explanation / Answer

please post the diagram please rate me

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