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4-71. Two couples act on the beam. Determine the magnitude of F so that the resultant couple moment is 450 lb ft, counterclockwise. Where on the beam does the resultant couple moment act? 1.5 ft 200 lb -2 ft 200 lb 1.25 ft 30° $30° -F
Transcribed Image Text:4-71. Two couples act on the beam. Determine the magnitude of F so that the resultant couple moment is 450 lb ft, counterclockwise. Where on the beam does the resultant couple moment act? 1.5 ft 200 lb -2 ft 200 lb 1.25 ft 30° $30° -F
Expert Solution
Step 1

Given:

Resultant couple moment can be given as 450 lb.ft

The force into horizontal and vertical component can be

Fx=Fcos30oFy=Fsin30o

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