Finding an Equivalent Couple for the Forces in the Figure

[mehsham]

Homework Statement

The forces shown in the Figure below form a couple. Replace the couple shown with an equivalent couple acting at points A and B. Please see figure

Homework Equations

Couple force moment equation is M = Fd (take only one of the two force vectors and distance between them)

The Attempt at a Solution

Actually, I don't understand what they want. I was just going to do M = 15 lb x(12in) but this question is for 6 marks so I'm definitely missing something. Please advice if you know what this question means.

Thank you,
Faisal Shibli

 

[tiny-tim]

Welcome to PF!

Hi Faisal! Welcome to PF!

The forces shown in the Figure below form a couple. Replace the couple shown with an equivalent couple acting at points A and B. Please see figure
…
… this question is for 6 marks so I'm definitely missing something. Please advice if you know what this question means.

The 6 marks do seem strange.

The question seems to be asking for a pair of opposite parallel forces through A and B …

which could be at any angle …

with the same Fd.

 

[pongo38]

Looks to me like a badly worded and badly drawn question. My response was to have a couple at A and B with forces perpendicular to AB. I wonder if I would have passed.