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Engineering Statics by Hibbeler 14th Edition
Chapter 4: Force System Resultants
Moment of a Couple
Simplification of Force & Couple System
Equivalent Force couple system

4–107. A biomechanical model of the lumbar region of the human trunk is shown. The forces acting in the four muscle groups consist of FR = 35 N for the rectus, FO = 45 N for the oblique, FL = 23 N for the lumbar latissimus dorsi, and FE = 32 N for the erector spinae. These loadings are symmetric with respect to the y–z plane.
Replace this system of parallel forces by an equivalent force
and couple moment acting at the spine, point O. Express the
results in Cartesian vector form.

Moment about a point
Moment of a force
Principle of Moments
Moment of a Force about specified axis

#EngineeringMechanics #EngineeringStatics #Statics #Hibbeler #CoupleMoment #chapter4

Hibbeler Statics - Chapter Playlists
Chapter 2: Force Vectors -    • Chapter 2: Force Vectors | Hibbeler S...  
Chapter 3: Equilibrium of a Particle -    • Chapter 3: Equilibrium of a Particle ...  
Chapter 4: Force System Resultants -    • Chapter 4: Force System - Resultants ...  
Chapter 5: Equilibrium of a Rigid Body -    • Chapter 5: Equilibrium of a Rigid Body  
Chapter 6: Structural Analysis -    • Chapter 6: Structural Analysis ( Hibb...  
Chapter 8: Friction -    • Chapter 6: Structural Analysis ( Hibb...