Unit 6Chapter 4: Moments of forces (2D)If forces acting on a body are not concurrent they tend to rotate the body.Mathematically model the effect of force FHat point OMethod #1: Definition of moment and geometryMethod #2: Use components of forceMethod #3: Use cross-productDefinition of a momentMoment of a force about a pointis a measure of tendency of force to rotate the body about a pointMoment is vector, has magnitude and direction. Magnitude defined asDirectionMoment examples:AAAAFLFFFMethod #1) Calculate Moment of a Force Use definition of moment, geometry to determine d, and intuition to determine direction of rotationUse method #1: Determine the moment of the force about point A.Use method #1: Determine the moment of F = 200 N about point APrinciple of Moments The moment of a force of the resultant of a system of forces with respect to a point = the sum of the moments of the individual forces about the same point.Method #2: Use components of forceMethod #2) Use Fx , Fycomponents to get moment of F about a pointAFDirection of Moments using Right Hand RuleDetermine the direction of the moment of 275 lbforce about point AUse Method #2: Find moment of the force about point OUse Method #2: Find moment of the force about point O.rFOMethod #3: Use cross product for moment calculationsDetermine the moment of the 500 N force about point ADetermine the moment of the 250 N force about point AItems to complete◼ Submit the classwork ICW #4: 6/13 to the submission box on Canvas by midnight, Tuesday, 6/14◼ Complete Homework #6 in Pearson by midnight, Tuesday, 6/14 (No FBD’s needed)◼ Read the MEEN 221 Quiz #3 Instructions with Honorlock before class on Wednesday 6/15, especially “File Upload” (quiz is over 3D particle