The horizontal top of a concrete column is subjected to the system of forces shown. Represent the resultant of all forces as a force R at point O and a couple M. Also specify the magnitudes of R and M. 6 KN 0.6 m 5 kN 0.8 m 3 KN 0.8 m 2 kN 0.4 m 5 kN 1 kN 7 kN 3 KN Answers: 0.4m 0.4 m 0.4m R = ( i i+ i j+ i k) KN M=( i i+ i j+ i k) kN·m R = i M = KN i kN·m

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