Problem 1: Shear stress A 15 mm diameter shaft is pulled through a cylindrical bearing as shown in the figure. A lubricant with kinematic viscosity equal to 2 × 10-3 m²/s and specific gravity 0.85 fills the 0.2 mm gap between the shaft and the bearing. Assume that the velocity inside the gap varies linearly between the moving shaft and the stationary bearing casing, and that the shear stress is proportional to the lubricant's dynamic viscosity and the slope of the velocity profile: 7 = V. Draw the free body diagram for forces acting on the shaft and determine the force, P, required to pull the shaft at a velocity of 2 m/s. Bearing Lubricant Shaft -0.5 m- Figure 1: The shaft moves at constant velocity of 2m/s.
Problem 1: Shear stress A 15 mm diameter shaft is pulled through a cylindrical bearing as shown in the figure. A lubricant with kinematic viscosity equal to 2 × 10-3 m²/s and specific gravity 0.85 fills the 0.2 mm gap between the shaft and the bearing. Assume that the velocity inside the gap varies linearly between the moving shaft and the stationary bearing casing, and that the shear stress is proportional to the lubricant's dynamic viscosity and the slope of the velocity profile: 7 = V. Draw the free body diagram for forces acting on the shaft and determine the force, P, required to pull the shaft at a velocity of 2 m/s. Bearing Lubricant Shaft -0.5 m- Figure 1: The shaft moves at constant velocity of 2m/s.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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