2-75 sol - F R u = 1 7 3 5 1 N 84.e-zt.a F3u-l rr.r l I r...

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I Problem 2-75 Three forces act on the hook. If the resultant force Fo has a magnitude and direction as shown, determine the magnitude and the coordinate direction angles of force Fr. Given: Fn = l20N F / = 8 o N Fz = ll0 N c = 3 d = 4 0 = 3 0 d e g 0 = 4 5 d e g Solutton F l t FRt ( 6 4 \ t l F r v = l o l N Ior / ( 0 ) t l t t u = l o l , u \ - l l 0 l (+z+)
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Unformatted text preview: F R u = 1 7 3 . 5 1 N \ 84.e / ( -zt.a\ F3u-l rr.r l* I r+o.q J r"'l [rs) lB l= | o:.2 laee \r ) \27.s ) r .' )[;l l#-'rl[,J r') = Ftl 0 | "[-,J 1,."'(6)si"(a)) = rnl "o'(o)""'(a) | \ 'rn(A) ) F 2 t Itq,,l = 16s.6 N F 3 n ' : F R u - F l u - F 2 u r") l o l : \ / ) ( t ' " ) acosl -i-----T I I lrr"lJ...
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