Conditions not changing the effect couple - Mechanics

Q.  Which of the following conditions do not change the effect of couple?
- Published on 18 Sep 15

a. Shifting of couple to a new position in its plane
b. Shifting of couple to a parallel plane
c. Rotation of couple in its plane
d. All of the above

ANSWER: All of the above

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    Discussion

  • Sravanthi   -Posted on 14 Dec 15
    - Couple is formed due to two unlike parallel, non-collinear forces which have same magnitude. Single force cannot balance a couple and the moment of couple is independent upon the moment centre.

    - The different factors which do not have any effect on couple are:

    1) If couple is shifted to any new position, then it has no effect on it.

    2) If couple is shifted to a parallel plane, than it has no effect on it.

    3) If couple is rotated through an angle, than it has no effect on it.

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