Determine the magnitude and direction of the couple moment F

Determine the magnitude and direction of the couple moment. Fd sin 35 degree, in the -x direction Fd, in the +x direction Fd sin 35 degree, in the +x direction Fd cos 35 degree, in the -x direction Fd, in the -x direction

Solution

The perpendicular distance between the two forces,

r = d*cos(35)

So, the couple moment,

M = F*r = F*d*cos(35) in the -x direction <---------answer

The direction is -x direction because the sense of rotation is clockwise towards the -ve x axis