A ball governor of the vertical compression spring type runs at a mean speed of N = 189.228 rev/min. The bell crank lever arms are a = 0.158 m and b = 0.063 m and the rotating balls have a mass of m = 2.793 kg each, and the ball radius is r = 0.114 m at the mean speed. Part A: If the speed range of the governor at the mean speed is A = 1.287 rev/min, determine the friction force F at the sleeve (neglect the effect of gravity on the balls). Part B: Determine the spring stiffness S that would be required to make the governor isochronous if the sleeve lift is y = 0.013 m from the mean position (assume the ball arm is vertical at the mean position).

A ball governor of the vertical compression spring type runs at a mean speed of N = 189.228 rev/min. The bell crank lever arms are a = 0.158 m and b = 0.063 m and the rotating balls have a mass of m = 2.793 kg each, and the ball radius is r = 0.114 m at the mean speed. Part A: If the speed range of the governor at the mean speed is A = 1.287 rev/min, determine the friction force F at the sleeve (neglect the effect of gravity on the balls). Part B: Determine the spring stiffness S that would be required to make the governor isochronous if the sleeve lift is y = 0.013 m from the mean position (assume the ball arm is vertical at the mean position).

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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