Problem 4.138 Replace the loading by an equivalent resultant force and couple moment acting at point O. Suppose that w 75 lb/ft. (Figure 1) Figure 1 of 1 9 ft W W -9 ft- > Part A Determine the resultant force. Express your answer using three significant figures. Enter positive value if the force is upward and negative value if the force is downward. 15] ΑΣΦ11 | vec FR = Submit Part B (MR)O = My Answers Give Up Submit Determine the couple moment. Express your answer using three significant figures. Enter positive value if the moment is counterclockwise and negative value if the moment is clockwise. VG ΑΣΦΠvec | ? My Answers Give Up lb ? kip ft Provide Feedback Continue

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Bending Moment

In general, we can define the bending moment as the reaction induced when a certain amount of load or force is applied to an element which makes it bend.