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UPSC Civil Service Exam Questions

Q1:
What is the magnitude of the resultant of parallel force system as shown in the figure ?

A 70 kNm

B zero

C 70 KNm couple anti clock wise

D 90 KN veritical force and a moment of 70 kNm clock wise.

ANS:C - 70 KNm couple anti clock wise

Answer C is correct.

It Considering all the forces take moment 1st left to end it will 70 kNm, 2nd from right it will be -70 kNm so the total system will rotate at a couple 70 kNm.



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