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The figure shows a band brake designed to prevent "backward" rotation of the shaft. The angle of wrap is 270, the band width is 54 mm, and the coefficient of friction is 0.20. The torque to be resisted by the brake is 200 N.m. The diameter of the pulley is 210 mm (a) What dimension c1 will just prevent backward motion? (b) If the rocker was designed with c1= 25 mm, what is the maximum pressure between the band and drum at 200 Nm back torque? (c) If the back-torque demand is 136 Nm, what is the largest pressure between the band and drum? 54 mm Rocker detail

The figure shows a band brake designed to prevent "backward" rotation of the shaft. The angle of wrap is 270, the band width is 54 mm, and the coefficient of friction is 0.20. The torque to be resisted by the brake is 200 N.m. The diameter of the pulley is 210 mm (a) What dimension c1 will just prevent backward motion? (b) If the rocker was designed with c1= 25 mm, what is the maximum pressure between the band and drum at 200 Nm back torque? (c) If the back-torque demand is 136 Nm, what is the largest pressure between the band and drum? 54 mm Rocker detail

Elements Of Electromagnetics
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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Problem 7 The figure shows a band brake designed to prevent "backward" rotation of the shaft. The angle of wrap is 270°, the band width is 54 mm, and the coefficient of friction is 0.20. The torque to be resisted by the brake is 200 N.m. The diameter of the pulley is 210 mm (a) What dimension c1 will just prever backward motion? (b) If the rocker was designed with c1 = 25 mm, what is the maximum pressure between the band and drum at 200 Nm back torque? (c) If the back-torque demand is 136 Nm, what is the largest pressure between the band and drum? 54 mm P Rocker detail
Transcribed Image Text:Problem 7 The figure shows a band brake designed to prevent "backward" rotation of the shaft. The angle of wrap is 270°, the band width is 54 mm, and the coefficient of friction is 0.20. The torque to be resisted by the brake is 200 N.m. The diameter of the pulley is 210 mm (a) What dimension c1 will just prever backward motion? (b) If the rocker was designed with c1 = 25 mm, what is the maximum pressure between the band and drum at 200 Nm back torque? (c) If the back-torque demand is 136 Nm, what is the largest pressure between the band and drum? 54 mm P Rocker detail
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