As follower AB rolls along the surface of member C, it exerts a constant force F perpendic...

As follower AB rolls along the surface of member C, it exerts a constant force F perpendicular to the surface, (a) Replace F with an equivalent force-couple system at the point D obtained by drawing the perpendicular from the point of contact to the x axis, (b) For a= 1 m and b = 2 m, determine the value of x for which the moment of the equivalent force-couple system at D is maximum.