Question

The force and the couple can’t be simplified together as one is the cause and the other is the effect.

(a) The statement is correct and the reason given is also correct

(b) The statement is wrong but the reason given is also correct

(c) The statement is wrong and the reason given is also wrong

(d) The statement is correct but the reason given is also wrong

I had been asked this question during an interview for a job.

I need to ask this question from Simplification of a Force and Couple System in chapter Force System Resultants of Engineering Mechanics

Answer 1

The correct answer is (c) The statement is wrong and the reason given is also wrong

The explanation is: Both of them are vector quantities. And both of them can be easily simplified. If taken in the vector form then the task is even easier. Thus it is not necessary for the force or the couple to be vector only, even if the magnitude is taken, the simplification is done in the 2D.