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# Sol Cap 02 - Edicion 8

## COSMOS: Complete Online

COSMOS: Complete Online Solutions Manual Organization System Chapter 2, Solution 137. ( 500 lb)[ cos30 sin15 sin 30 cos30 cos15 ] ( 500 lb)[ 0.2241i 0.50j 0.8365k ] ( 112.05 lb) i ( 250 lb) j ( 418.25 lb) k ( 600 lb)[ cos 40 cos 20 sin 40 cos40 sin 20 ] ( 600 lb)[ 0.71985i 0.64278j 0.26201k ] ( 431.91 lb) i ( 385.67 lb) j ( 157.206 lb) k ( 319.86 lb) ( 635.67 lb) ( 261.04 lb) P = − ° ° i + ° j + ° ° k = − + + =− + + Q = ° ° i + ° j − ° ° k = + − = + − R = P + Q = i + j + k ( ) ( ) ( ) 2 2 2 R = 319.86 lb + 635.67 lb + 261.04 lb = 757.98 lb R = 758 lb ! Rx 319.86 lb cosθ x = = = 0.42199 R 757.98 lb θ = 65.0°! Ry 635.67 lb cosθ y = = = 0.83864 R 757.98 lb θ = 33.0°! Rz 261.04 lb cosθ z = = = 0.34439 R 757.98 lb θ = 69.9°! x y 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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