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Sol Cap 02 - Edicion 8

COSMOS: Complete Online

COSMOS: Complete Online Solutions Manual Organization System Chapter 2, Solution 44. Free-Body Diagram: Σ F x = 0: 4 21 − TCA + TCB = 0 5 29 or T CB ⎛29 ⎞⎛4 ⎞ = ⎜ T 21 ⎟⎜ 5 ⎟ ⎝ ⎠⎝ ⎠ CA 3 20 Σ F y = 0: TCA + TCB − ( 3 kN) = 0 5 29 3 20⎛29 4 ⎞ CA + CA 3 kN 0 5 29 ⎜ × − = 21 5 ⎟ ⎝ ⎠ Then T T ( ) or T CA = 2.2028 kN (a) (b) T = 2.20 kN ! CA T = 2.43 kN ! CB 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.

COSMOS: Complete Online Solutions Manual Organization System Chapter 2, Solution 45. Free-Body Diagram: Σ = 0: − F sin50° + F sin 70° = 0 F y B C F C sin 50° = sin 70° ( F ) B Σ = 0: − F cos50° − F cos70° + 940 N = 0 F x B C sin 50 FB ⎢ ⎡ cos50°+ cos70° ⎛ ⎜ ° ⎞ ⎟⎥ ⎤ = 940 ⎣ ⎝sin 70° ⎠⎦ F B = 1019.96 N F C sin 50° = sin 70° ( 1019.96 N ) or F = 831 N ! C F = 1020 N ! B 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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