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Sol Cap 02 - Edicion 8

COSMOS: Complete Online

COSMOS: Complete Online Solutions Manual Organization System Chapter 2, Solution 92. uuuuv BH = i + j − k ( 0.75 m) ( 1.5 m) ( 1.5 m) ( 0.75 m) ( 1.5 m) ( 1.5 m) 2 2 2 BH = + + − T = 2.25 m = T λ = T BH BH BH BH uuuuv BH BH T 600 N ( 0.75 m ) ( 1.5 m ) ( 1.5 m ) BH = 2.25 m ⎡ ⎣ i + j − k ⎤ ⎦ ( 200 N) ( 400 N) ( 400 N) = i + j − k ∴ ( T BH ) x = 200 N ⊳ ( ) 400 N T = ⊳ BH y ( ) 400 N T =− ⊳ BH 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.

COSMOS: Complete Online Solutions Manual Organization System Chapter 2, Solution 93. ( 4 kips)[ cos30 sin 20 sin 30 cos30 cos 20 ] ( 1.18479 kips) i ( 2 kips) j ( 3.2552 kips) k ( 8 kips)[ cos 45 sin15 sin 45 cos 45 cos15 ] ( 1.46410 kips) i ( 5.6569 kips) j ( 5.4641 kips) k ( 0.27931 kip) ( 3.6569 kips) ( 2.2089 kips) P = ° ° i − ° j + ° ° k = − + Q = − ° ° i + ° j − ° ° k =− + − R = P + Q = − i + j − k ( 0.27931 kip) ( 3.6569 kips) ( 2.2089 kips) 2 2 2 R = − + + − R = 4.2814 kips or R = 4.28 kips ⊳ Rx −0.27931 kip cosθ x = = = − 0.065238 R 4.2814 kips Ry 3.6569 kips cosθ y = = = 0.85414 R 4.2814 kips Rz − 2.2089 kips cosθz = = = − 0.51593 R 4.2814 kips or θ x = 93.7°⊳ θ = 31.3°⊳ y θ = 121.1°⊳ 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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