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Sol Cap 02 - Edicion 8

COSMOS: Complete Online

COSMOS: Complete Online Solutions Manual Organization System Chapter 2, Solution 78. (a) ( ) F x = 180 lb cos30° cos 25° = 141.279 lb (b) ( ) F =− 180 lb sin 30° y =− 90.000 lb ( ) F z = 180 lb cos30° sin 25° = 65.880 lb 141.279 lb cosθ x = 180 lb cos θ y −90.000 lb = 180 lb F = 141.3 lb ! x F =− 90.0 lb ! y F = 65.9 lb ! z or θ x = 38.3°! or θ y = 120.0°! cosθ = z 65.880 lb 180 lb or θ z = 68.5°! 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 79. (a) ( ) F = − 220 N cos60° cos35° x = − 90.107 N F =−90.1 N x ( ) F = 220 N sin 60° y = 190.526 N F y = 190.5 N ( ) F = − 220 N cos60° sin 35° z = − 63.093 N F =−63.1 N z (b) cos θ x = − 90. 107 Ν 220 N θ = 114.2° x 190.526 N cosθ y = 220 N θ = 30.0° y cos θ z = −63.093 N 220 N θ = 106.7° z 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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