COSMOS Chapter 8 Solution 124 | Answer Key - Edubirdie

University:
Michigan State University
Course:
ERG 160 | Success in Science, Technology, Engineering, and Mathematics
Academic year:

2021
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165

Pages:

1
Author:

Dixie Summers

COSMOS: Complete Online Solutions Manual Organization System Chapter 8, Solution 124. FBD pin B: T1 = T2 (a) By symmetry:  2  ΣFy = 0: B − 2  T =0  2 1    Drum: or B= 2T1 = 2T2 (1) For impending rotation : T3 > T1 = T2 > T4 , so T3 = Tmax = 5.6 kN ( −0.25 π4 + π6 Then T1 = T3e− µs β L = ( 5.6 kN ) e or T1 = 4.03706 kN = T2 and T4 = T2e− µs β R = ( 4.03706 kN ) e or T4 = 2.23998 kN ) ( ) −0.25 34π ΣM F = 0: M 0 + r (T4 − T3 + T2 − T1 ) = 0 or M 0 = ( 0.16 m )( 5.6 kN − 2.23998 kN ) = 0.5376 kN ⋅ m Lever: M 0 = 538 N ⋅ m (b) Using Equation (1) B= 2T1 = 2 ( 4.03706 kN ) = 5.70927 kN ΣM D = 0: ( 0.05 m )( 5.70927 kN ) − ( 0.25 m ) P = 0 P = 1.142 kN Vector Mechanics for Engineers: Statics and Dynamics, 8/e, Ferdinand P. Beer, E. Russell Johnston, Jr., Elliot R. Eisenberg, William E. Clausen, David Mazurek, Phillip J. Cornwell © 2007 The McGraw-Hill Companies.

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