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Determine the resultant couple moment acting on thebeam

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Determine the resultant couple moment acting on thebeam.Solve the problem two ways: (a) sum moments about pointO; and (b) sum moments about point A.Final answer:(a) M_R= 8 cos45 (1.8) + 8 sin45 (0.3) + 2 cos30(1.8) - 2 sin30 (0.3) - 2 cos30 (3.3) -8 cos 45(3.3)M_R=9.69kN-m(b) M_R=9.69kN-m