Determine the magnitude of F so that the resultant couple mo

Determine the magnitude of F so that the resultant couple moment is 370 lb. ft counterclockwise. Express your answer to three significant figures and include the appropriate units. Part B Where on the beam does the resultant couple act? nowhere the right side of the beam the left side of the beam anywhere in the middle of the beam

Solution

Part A) MA = + 370 = F (4/5) 1.5 + F (3/5) 4 – 200 (1.5)

370 = F (1.20) + F (2.40) – (200) 1.5

370 = 3.60 F – 300

3.60 F = 670

F = 186.11lb

Part B) Resultant couple can act anywhere.