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Wrench Resultant

WRENCH RESULTANT

When the resultant couple vector M is parallel to the resultant for R , the resultant is said to be a wrench

 

                                                                     Fig. 3.16(a) Positive wrench                        Fig. 3.16(b) Negative wrench

The original M vector and R is hereby replaced to R and some M1 acting some other point (at a distance from the original set. This is illustrated below :

we observe this phenomena when We use screw driver