Ref. Fig. 3.15(a),

The resultant,

In this case, we consider all anticlockwise moments as a positive value and all the clockwise moments as the negative value. However, initially, we did not know it that Rd is in the clockwise or anticlockwise moment. Thus the algebraic signs help to determine it.

Links of Previous Main Topic:-

• Introduction to statics
• Introduction to vector algebra
• Two dimensional force systems
• Types of coplanar parallel forces
  Resolution of a force into a force and a couple
• Resultant of a number of forces

Links of Next Mechanical Engineering Topics:-

• Three dimensional force systems
• Three dimensional moment and couple system
• Wrench resultant
• Introduction concept of equilibrium of rigid body
• Friction introduction
• Introduction about distributed forces

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