If two parallel forces (separated by a distance d)have same magnitude but are opposite, their force resultant will be zero but their resultant moment will not. This pair of forces is called a couple. These two forces will create a rotation instead of translation or linear movement.
MOMENT OF A COUPLE
Similar with how moment is computed, couples can be computed using two methods:
1. Scalar formulation which defines defines the magnitude of the couple as
1. Scalar formulation which defines defines the magnitude of the couple as
2.Vector formulation using the principle of cross product in the computation
Scalar formulation is limited on two-dimensional plane or coplanar forces but vector formulation is used for both two-dimensional and three-dimensional planes.
Also, the principle of moments would be followed (The resultant moment of a couple can be determined by taking the summation of moments from the couples).
EXAMPLE 6.0.2: RESULTANT COUPLE MOMENT FOR COPLANAR COUPLES
EXAMPLE 6.0.3: APPLICATION PROBLEM ON RESULTANT COUPLE MOMENT FOR COPLANAR COUPLES
EXAMPLE 4: APPLICATION PROBLEM ON RESULTANT COUPLE MOMENT FOR COPLANAR COUPLES
EXAMPLE 6.0.3: APPLICATION PROBLEM ON RESULTANT COUPLE MOMENT FOR COPLANAR COUPLES
EXAMPLE 4: APPLICATION PROBLEM ON RESULTANT COUPLE MOMENT FOR COPLANAR COUPLES
EXAMPLE 3: RESULTANT COUPLE MOMENT FOR SPATIAL COUPLES
EXAMPLE 4: RESULTANT COUPLE MOMENT FOR SPATIAL COUPLES
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